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StorageWorks Fibre Channel
Storage Switch Service Guide
AA-RHBZA-TE 135268-001

First Edition (April 1999)
Part Number AA-RHBZA-TE 135268-001
Compaq Computer Corporation

Notice
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS” AND COMPAQ
COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR
STATUTORY AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST
INFRINGEMENT.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
© 1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
Compaq, Deskpro, Fastart, Compaq Insight Manager, Systempro, Systempro/LT, ProLiant, ROMPaq,
QVision, SmartStart, NetFlex, QuickFind, PaqFax, ProSignia, registered United States Patent and
Trademark Office.
Neoserver, Netelligent, Systempro/XL, SoftPaq, QuickBlank, QuickLock are trademarks and/or service
marks of Compaq Computer Corporation.
Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Pentium is a registered trademark and Xeon is a trademark of Intel Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.

StorageWorks Fibre Channel Storage Switch Service Guide
First Edition (April 1999)
Part Number AA-RHBZA-TE 135268-001

Contents

About This Guide
Text Conventions ................................................................................................. vii
Symbols in Text ................................................................................................... vii
Symbols on Equipment ........................................................................................ viii
Rack Stability........................................................................................................ ix
Getting Help.......................................................................................................... ix
Compaq Technical Support ............................................................................. ix
Compaq Website ............................................................................................. x
Compaq Authorized Reseller ........................................................................... x

Chapter 1
Introduction
Introduction to the Fibre Channel Storage Switch................................................. 1-1
Fibre Channel Switch Features...................................................................... 1-2
Performance ................................................................................................. 1-6
Manageability............................................................................................... 1-6
Modularity.................................................................................................... 1-6
Reliability..................................................................................................... 1-7
Serviceability................................................................................................ 1-7
System Components ............................................................................................ 1-8
Switching Function....................................................................................... 1-8
Embedded Port ............................................................................................. 1-8
System Firmware.......................................................................................... 1-9
Interface Cards .................................................................................................... 1-9
Dual Channel G_Port Interface Card ...........................................................1-10
Dual Channel FL_Port Interface Card ......................................................... 1-11
SWL Fiber-Optic GBIC Module ................................................................. 1-11

iv StorageWorks Fibre Channel Storage Switch Service Guide

Chapter 2
Troubleshooting
Introduction......................................................................................................... 2-1
Diagnostics Overview.......................................................................................... 2-1
Bootrom Memory Test Diagnostics............................................................... 2-2
Diagnostic Front Panel Displays ................................................................... 2-2
Isolating a System Fault................................................................................ 2-4
Removing Power .......................................................................................... 2-4
Status and Activity Indicators .............................................................................. 2-4
Front Panel LED Power Indicator ................................................................. 2-4
Front Panel LED Port Indicators ................................................................... 2-5
Initialization Steps ........................................................................................ 2-5
Power-On Diagnostics ......................................................................................... 2-6
Diagnostics ......................................................................................................... 2-6
Bootrom Diagnostics .................................................................................... 2-7
Test Menu .................................................................................................... 2-7
Switch Offline .............................................................................................. 2-8
Switch Online............................................................................................... 2-8
Memory Test ................................................................................................ 2-8
Port Register Test ......................................................................................... 2-9
RDRAM Test ............................................................................................... 2-9
Central Memory Test .................................................................................... 2-9
Port Loopback Test..................................................................................... 2-10
Cross Port Test ........................................................................................... 2-10
Spin Silk Test ............................................................................................. 2-11
Display Test ............................................................................................... 2-12
Push Button Test ........................................................................................ 2-12
Diagnostic Error Messages ................................................................................ 2-12
Port Register Test Error Message ................................................................ 2-13
RDRAM Test Error Message ...................................................................... 2-15
Central Memory Test Error Messages ......................................................... 2-16
Loopback Test Error Messages ................................................................... 2-17
Cross Port Test Error Messages................................................................... 2-20
SpinSilk Test Error Messages ..................................................................... 2-23
Error Messages by Firmware Module.......................................................... 2-24
Panic Errors................................................................................................ 2-28

Chapter 3
Repair and Replacement
Repair and Replacement Overview ...................................................................... 3-1
Field Replaceable Units (FRU) Definition............................................................ 3-1
Servicing a StorageWorks Switch ........................................................................ 3-3
Replacing Interface Cards.................................................................................... 3-3
Removing a Switch Cover ............................................................................ 3-3
Removing an Interface Card.......................................................................... 3-4

About This Guide v

Installing an Interface Card ........................................................................... 3-6
Replacing a GBIC Module................................................................................... 3-6
Replacing a CPU Card......................................................................................... 3-7
Removing a CPU card .................................................................................. 3-7
Installing a CPU Card ................................................................................... 3-8
Replacing a Memory Module............................................................................... 3-9
Replacing the Front Panel Assembly.................................................................. 3-10
Removing the Front Panel........................................................................... 3-10
Installing the Front Panel ............................................................................ 3-11
Replacing the Power Supply .............................................................................. 3-11
Removing the Power Supply ....................................................................... 3-11
Installing the Power Supply ........................................................................ 3-13
Replacing the Main Chassis Fans ....................................................................... 3-13
Removing the Fan Assembly....................................................................... 3-13
Installing a Fan Assembly ........................................................................... 3-14
Replacing the Motherboard................................................................................ 3-15
Removing the Motherboard......................................................................... 3-15
Installing the Motherboard .......................................................................... 3-15

Appendix A
Glossary
Definition of Terms ............................................................................................ A-1

Appendix B
Bootrom Diagnostics
Bootrom Memory Test........................................................................................ B-1
Memory Test Error Indicators............................................................................. B-2
Memory Test Description............................................................................. B-3
Error Conditions .......................................................................................... B-4

Appendix C
License Key Codes
When to Replace a License Key.......................................................................... C-1
Installing a New Key Code ................................................................................. C-2

Index
List of Figures
Figure 1-1. Switch Front View........................................................................... 1-2
Figure 2-1. Fibre Channel Front Panel Display.................................................... 2-3
Figure 2-2. Switch Set to Run Cross Port Test. .................................................. 2-10
Figure 3-1. Removing the Switch Cover............................................................. 3-4
Figure 3-2. Removing an Interface Card.............................................................. 3-4

vi StorageWorks Fibre Channel Storage Switch Service Guide

Figure 3-3. Loosing the Rear Interface Card Bracket ........................................... 3-5
Figure 3-4. Interface Card - Media Interface Module and Card Extractor ............. 3-7
Figure 3-5. Removing a CPU Card...................................................................... 3-8
Figure 3-6 Removing the Front Panel Assembly............................................... 3-10
Figure 3-7. Power Supply Side of Switch, Cover Removed .............................. 3-12
Figure 3-8. Main Chassis Fans and Power Connections ..................................... 3-13
Figure 3-9. Main Chassis Fans with Sub-assembly and Power Connections ....... 3-14
Figure B-1. Location of Bootrom LEDs ............................................................. B-1

List of Tables
Table 1-1 Storage Switch Technical Features ....................................................... 1-3
Table 1-2 Interface Card Terminologg ................................................................. 1-9
Table 2-1 Power LED Status Indicators................................................................ 2-4
Table 2-2 Port LED Status Indicators................................................................... 2-5
Table 2-3 Error Messages by Firmware Module ................................................. 2-24
Table 2-4 Panic Errors ....................................................................................... 2-28
Table 3-1 Field Replaceable Units ....................................................................... 3-2
Table A-1 Switch Terminology........................................................................... A-1
Table B-1 7-bit Assignments of the CPU LEDs................................................... B-2

About This Guide

This guide is designed to be used as step-by-step instructions for installation
and as a reference for operation, troubleshooting, and future upgrades.

Text Conventions
This document uses the following conventions to distinguish elements of text:
Keys

Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.

Type

When you are instructed to type information, type
the information without pressing the Enter key.

Enter

When you are instructed to enter information, type
the information and then press the Enter key.

Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING: Text set off in this manner indicates that failure to follow directions
in the warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions
could result in damage to equipment or loss of information.

viii StorageWorks Fibre Channel Storage Switch Service Guide

IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points
of information.

Symbols on Equipment
These icons may be located on equipment in areas where hazardous conditions
may exist.
Any surface or area of the equipment marked with these symbols
indicates the presence of electrical shock hazards. Enclosed area
contains no operator serviceable parts.
WARNING: To reduce the risk of injury from electrical shock hazards,
do not open this enclosure.
Any RJ-45 receptacle marked with these symbols indicates a Network
Interface Connection.
WARNING: To reduce the risk of electrical shock, fire, or damage to
the equipment, do not plug telephone or telecommunications
connectors into this receptacle.
Any surface or area of the equipment marked with these symbols
indicates the presence of a hot surface or hot component. If this
surface is contacted, the potential for injury exists.
WARNING: To reduce the risk of injury from a hot component, allow
the surface to cool before touching.
Power Supplies or Systems marked with these symbols
indicate the equipment is supplied by multiple sources of
power.
WARNING: To reduce the risk of injury from electrical shock,
remove all power cords to completely disconnect power from
the system.

About This Guide ix

Rack Stability
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
■

The leveling jacks are extended to the floor.

■

The full weight of the rack rests on the leveling jacks.

■

The stabilizing feet are attached to the rack if it is a single rack
installations.

■

The racks are coupled together in multiple rack installations.

■

A rack may become unstable if more than one component is extended for
any reason. Extend only one component at a time.

Getting Help
If you have a problem and have exhausted the information in this guide, you
can get further information and other help in the following locations.

Compaq Technical Support
You are entitled to free hardware technical telephone support for your product
for as long you own the product. A technical support specialist will help you
diagnose the problem or guide you to the next step in the warranty process.
In North America, call the Compaq Technical Phone Support Center at
1-800-OK-COMPAQ1. This service is available 24 hours a day, 7 days a week.
Outside North America, call the nearest Compaq Technical Support Phone
Center. Telephone numbers for world wide Technical Support Centers are
listed on the Compaq website. Access the Compaq website by logging on to
the Internet at http://www.compaq.com.
Be sure to have the following information available before you call Compaq:

■

Technical support registration number (if applicable)

■

Product serial number (s)

■

Product model name(s) and numbers(s)

■

Applicable error messages

For continuous quality improvement, calls may be recorded or monitored.

x StorageWorks Fibre Channel Storage Switch Service Guide

■

Add-on boards or hardware

■

Third-party hardware or software

■

Operating system type and revision level

■

Detailed, specific questions

Compaq Website
The Compaq website has information on this product as well as the latest
drivers and Flash ROM images. You can access the Compaq website by
logging on to the Internet at http://www.compaq.com.

Compaq Authorized Reseller
For the name of your nearest Compaq Authorized Reseller:
■

In the United States, call 1-800-345-1518.

■

In Canada, call 1-800-263-5868.

■

Elsewhere, see the Compaq website for locations and telephone
numbers.

Chapter

Introduction

Introduction to the Fibre Channel
Storage Switch
The Fibre Channel Gigabit Storage Switch consists of:
■

A motherboard

■

A processor board

■

Connectors for supporting up to 8 dual-port interface cards

■

Firmare for building and managing a Fabric.
A Fabric is an active, intelligent, non-shared interconnect scheme for Fibre
Channel server and storage nodes. One or more Switches interconnected
create a Fibre Channel Fabric. Figure 1-1 shows the front view of the
Switch.
Beginning with Switch Features, this chapter contains a section each on the
system components and the interface cards.
NOTE: Note: Zoning, Cascading, FL_ports, SES, and Copper Media are not fully
supported by Compaq as of April 1999. However, the software bundle that
enables these features is included in the software package with this Switch and
is provided at no additional cost so that customers may have the opportunity to
become familiar with these advanced SAN functions. Compaq will support many
of these and other SAN functions in the future. Contact your Compaq Authorized
Reseller or Compaq Account Representative for specific information on these
features.

1-2 StorageWorks Fibre Channel Storage Switch Service Guide

0
2
4

12
14

1
3
5
7
9

11
13

SHR-1205

Figure 1-1. Switch Front View

Fibre Channel Switch Features
■

Simplicity – After Power-On Self-Test (POST), you need only to enter
the Internet Protocol (IP) address. The remainder of the Switch setup is
automated.

■

Intelligence – Supports up to 32 interconnected Switches; firmware
allows discovery of all connected devices and determines optimum data
paths without user intervention.

■

Flexibility – The Switch's modular design includes multiple interface
cards. Supports G_Port (F_Port and E_Port) FL_Port cards, FL_Port
cards.Reliability – Highly integrated, reliable, multifunction (ASIC)
devices are incorporated into the Switch’s design.

■

High performance – Low-latency, high-performance design requires no
CPU data path interaction resulting in a worst-case data transfer latency
of less than two microseconds. The latency may differ when the
destination is a loop.

■

Automated congestion management – Virtual channels lets the Switch
use sophisticated congestion management techniques that are performed
automatically by the Switch.

■

Cascading – Incorporating a cascade design, up to 32 Switches can be
interconnected for a large Fabric with hundreds of Fabric connections.

Introduction 1-3

Table 1-1 describes Switch technical features.

Table 1-1
Storage Switch Technical Features
FEATURE

DESCRIPTION

Explicit Fabric login is supported (public and private).

Probing

Automatic discovery of devices and auto registration with the
Fabric Simple Name Service (SNS). For private devices, translation
mode is set so that other Fabric attached devices can
communicate with them.

Virtual Channels

The Switch has 8 virtual channels and 4 priority levels supporting
each Switch port. Different virtual channels are automatically
assigned with different priority levels to accommodate various
types of data flow, different communications protocols and user
applications. Virtual channels provide a flexible congestion
management that is also used to separate traffic among:
■ Fibre Channel Link Control frames and Data frames
■

Class 2, Class 3, and Class F frames

■

E_Port, F_Port, and FL_Port destined traffic

Data Field Size

The Fibre Channel frame’s data field size is up to 2112 bytes.

Zoning

Zoning is a Fabric management service used to create logical
device subsets within a Storage Area Network (SAN) which
enables resource partitioning for management and access control.

Buffer-to-buffer credit

Buffer-to-buffer credit for each F_Port can be up to 16 credits. For
the E_Port, buffer-to-buffer credit can be a total of 62 distributed
among all 8 virtual channels.
The FL_Port uses the alternate buffer-to-buffer credit
management model. Each FL_Port may be configured for Open
and supports a BB_Credit of 0 or 1. Up to 16 credits can be made
available when opened. Open transmit credit can be 0 or 1 on a
per-destination NL_Port basis.
continued

1-4 StorageWorks Fibre Channel Storage Switch Service Guide

Table 1-1
Storage Switch Technical Features continued

FEATURE

DESCRIPTION

Time Out Values

Both R_A_TOV (Resource Allocation Time Out Value) and
E_D_TOV (Error Detect Time Out Value) are adjustable in 1millisecond increments via Telnet.

Fabric Name

An automatic Fabric Name assignment method is used in a multiSwitch configuration.

Frame Delivery

The Switch delivers the frames via the destination F_Port in the
same order received by the source F_Port. The in-order frame
delivery is maintained within a Fabric of multiple interconnected
Switches.

Address Assignment

The Switch follows the addressing hierarchy defined in the Fibre
Channel Standard. The Switch port address identifiers are
selected using an automatic address assignment protocol. All
ports within the switching Fabric (F_Ports, FL_Ports and E_Ports)
are assigned address identifiers. Each Switch maintains its own
address pool. The management of address identifiers and
assignment of the address pool to the individual Switches are
performed by the designated address managers within the Fabric.

Broadcast and Multicast

The system supports up to 32 multicast groups, one is reserved
for broadcast. Any port can be a member of multiple groups. In
addition to the unicast routing table, each port has its own
multicast routing table. The Alias Server is responsible for setting
up and removing multicast groups.

Frame Routing

Self-routing of frames between the communicating ports is
supported. The path selection in a multiSwitch configuration is
based on a self-routing protocol.
continued

Introduction 1-5

Table 1-1
Storage Switch Technical Features continued

FEATURE

DESCRIPTION

Management

The Switch may be managed via Telnet, the SNMP agent, the
SCSI-3 SES protocol agent, and the Web Tools via StorageWorks
Command Console software. The last three entities are accessible
via the Internet Protocol over RJ45 10BaseT Ethernet port or any
Fibre Channel port. You can use any SNMP-based management
product to access the SNMP agent. You may use any supported
Web browser to use the Web Tools.

Name Server

The Name Server function is based on the Simple Name Server
model defined in the Fibre Channel Standard. This function is
provided by the embedded N_Port with the alias address,
FFFFFCh, to register address mapping between the Nx_Port 24-bit
Fibre Channel physical address (Nx_Port identifier) and the logical
addresses such as Worldwide Names, IP addresses, FC-4 device
types, and Initial Process Associators. The Name Server also
provides the de-registration and query functions from other nodes
or Nx_Ports for logical address translations to the corresponding
Nx_Port identifiers.

Alias Server

The Alias Server is based on the Fibre Channel Standard. The
function is provided by the embedded N_Port with the alias
address, FFFFFAh. It manages multicast groups.

1-6 StorageWorks Fibre Channel Storage Switch Service Guide

Performance
A minimum aggregate routing capacity of 8M frames/sec is specified for Class
2, Class 3, and Class F frames. Non-blocking throughput of up to 16 x
100MBytes/sec (1.6 GBytes/sec) is provided.
A maximum Switch latency of less than two microseconds is specified for
Class 2, Class 3, and Class F frames when the output port is free.

Manageability
The Switch is managed locally with the four front panel buttons and the front
panel display. Remote management is also available through Telnet, SNMP, or
with the Web.

Modularity
The modularity built into the Switch allows:
■

Plug-in interface cards for flexibility and upgrade easeMixing both G (F
or E) ports and FL ports

■

Adding two to eight cards to each Switch with each card
accommodating two 1-Gbps ports (2 Gbps total per card) each port is
full-duplex (bi-directional at this rated throughput)

■

Support for different transmission media for each port.

These modularity components create a very flexible Switch, capable of
meeting a wide range of interconnection and communication requirements.

Introduction 1-7

Reliability
The Switch has the following features to ensure its reliability:
■

Power-On Self-Test (POST)

■

Bootrom Memory Testing

■

Temperature and fan-speed monitoring

■

Low component count.

Serviceability
The Switch has the following features, which enhance its serviceability:
■

Simple enclosure

■

Loopback test modes for service

■

User-friendly diagnostics

■

No jumpers or Switch settings

■

All Field Replaceable Units (FRU) are modular, and are:

CPU board
 GBIC modules
 Interface cards
 Power supply
 Chassis, front panel assembly, and motherboard.
NOTE: Field Replaceable Units (FRU) are listed in Chapter 3.

1-8 StorageWorks Fibre Channel Storage Switch Service Guide

System Components
The Switch architecture separates the switching function from the ports,
resulting in three basic board modules: the motherboard, its CPU daughter
board, and plug-in interface cards.
The CPU daughter board module holds the CPU, memory, and an Ethernet
port.
Components are enclosed in an air-cooled chassis, which can be mounted in a
standard rack or used as a tabletop unit.
The chassis has a local user interface via four push buttons and a Vacuum
Fluorescent Display (VFD) for local access to the Switch’s internal functions.

Switching Function
The switching function is based on a central memory bank associated with its
data path control. Each Switch port stores received frames in this memory,
passing a buffer pointer to the forwarding port’s transmitter. The Switch uses
cut-through routing to route frames from the receiving port to the transmitting
port - providing the transmit port is free - without waiting for the end of the
frame to be received. This provides a low-latency data path within the Switch.
The frame may be temporarily stored in the memory bank but only if the
transmit port is busy.

Embedded Port
The embedded port, which is a logical N_Port, is based on a microcontroller
and is responsible for:
■

Fibre Channel link control

■

Switch management

■

Routing table management

■

Address assignment and management functions

■

Management of Class F services and the related protocols as defined in
the Fibre Channel Standard.

The embedded port also functions as an SNMP agent, a Fibre Channel Name
Server, and an Alias Server to manage multicast and broadcast functions.

Introduction 1-9

System Firmware
The system firmware controls the management, automatic configuration, and
diagnostics of the StorageWorks Fibre Channel Switch.

Interface Cards
The Switch has slots to accommodate eight plug-in, dual G_Port or dual
FL_Port interface cards.
All interfaces have status lights visible from the front panel giving a quick,
visual check of the interface card’s status and activity.
The Fibre Channel standards-compliant G_Ports and FL_Ports operate in fullduplex mode, supporting link speeds of 1.0625 Gigabits/sec in each direction.
The following table explains the interface card terminology.

Table 1-2
Interface Card Terminologg
Term

Definition

G_Port

Generic Switch port that operates in either E_Port or F_Port modes.

E_Port

An E_Port is an interSwitch expansion port used to connect to an
E_Port of another Switch to build a larger Fabric.

F_Port

The F_Port is the Fabric access port used to connect an N_Port.

FL_Port

The FL_Port is the Fabric access port used to connect NL_Ports to
the Switch in a loop configuration.

N_Port

The N_Port is an equipment port connected to the Fabric via an
F_Port.

NL_Port

The NL_Port is an equipment port connected to the Fabric in a loop
configuration via an FL_Port.

Nx_Port

An Nx_Port is either a N_Port or a NL_Port.

G_Port

Generic Switch port that operates in either E_Port or F_Port modes.

A Switch is scalable and allows interconnecting up to 32 Switches in flexible
topologies building medium to large Fibre Channel switching Fabrics.
Topologies are automatically changed as new Switches or links are added and

1-10 StorageWorks Fibre Channel Storage Switch Service Guide

as the Fabric grows. Additionally, the Switches in the Fabric automatically
reconfigure the Fabric as Switches or links fail or are removed.

Dual Channel G_Port Interface Card
Each dual-channel G_Port interface card supports two G_Ports. Each G_Port
accepts interchangeable GBIC modules are installed. Currently, the GBIC
modules supported are the SWL fiber-optic and LWL fiber-optic. CRC

checking in both the receiving and transmitting sections of the G_Port
assures the data integrity of the path within the Switch.
If your installation requires installing a single GBIC module on this card, a
metal, spring-loaded door protects the unused port position.

Introduction 1-11

Dual Channel FL_Port Interface Card
Each dual-channel FL_Port interface card supports two FL_Ports when two
interchangeable GBIC modules are installed for connecting to Fibre Channel
Arbitrated Loops.
The FL_Port card has a green identifying LED visible from the front of the
interface card.
The FL_Port may be attached to either private NL_Ports or public NL_Ports.
The FL_Port manages loop communication and initialization. NL_Ports
realize the same benefits as N_Ports directly connected to the Fabric.
If your installation requires installing a single GBIC module on this card, a
metal, spring-loaded door protects the unused port position.

SWL Fiber-Optic GBIC Module
The SWL fiber-optic GBIC module is based on short wavelength CD lasers or
Vertical Cavity Surface Emitting Laser (VCSEL) supporting 1.0625 Gbps link
speeds. This GBIC module supports 50-micron multimode fiber. Cable up to
500 meters in length.
NOTE: The SWL GBIC module uses a Class 1 laser, which complies with the 21 CFR,
subpart (J) as of the date of manufacture

Chapter

Troubleshooting

Introduction
This Chapter describes how to troubleshoot the StorageWorks Fibre Channel
Storage using feedback from diagnostics, status indicators and LEDs, memory
and loopback tests, and point-of-failure tests. The major sections are:
■

Diagnostics Overview

■

Status and Activity Indicators

■

Diagnostic Tests

■

Diagnostic Error Messages.

Diagnostics Overview
The Switch is designed for maintenance-free operation. In the case of a
failure, self-diagnostic tests aid in isolating equipment or Fabric failures.
The Switch employs Power-On Self-Tests (POSTs) and diagnostic tests. The
diagnostic tests determine status and isolate problems.
Telnet commands determine the Switch’s status, error conditions, and Switch
operating statistics.
Diagnostics are run using either front panel controls or commands from a
Telnet session. The front panel and Telnet diagnostics overlap in function but
are mutually exclusive. You can, for example, start a diagnostic test from the

2-2 StorageWorks Fibre Channel Storage Switch Sevice Guide

front panel and monitor the results using both the front panel display and
Telnet.
When beginning a test from the front panel, you can monitor the progress, but
you cannot control the test with Telnet. If you start a test with Telnet, and
attempt to control the test from the front panel, you might lock up the Telnet
session and need to kill the Telnet session from the front panel.
The tests performed by the front panel and through Telnet are identical.
Because the front panel displays a two-line limit, more detailed test results are
displayed with Telnet.

Bootrom Memory Test Diagnostics
The Bootrom Memory Test executes at power-up and tests all memory
locations four times. The test algorithm is a write-all/read cache algorithm,
rather than a write/read cache algorithm.
For a complete description of the Bootrom Memory Test, see Appendix B,
Bootrom Diagnostics.

Diagnostic Front Panel Displays
If you suspect a Switch or a Fibre Channel port failure, check the color LED
Indicators located adjacent to the port connectors. The LEDs determine the
status of each port.

Troubleshooting 2-3

6
SHR-1209

Figure 2-1. Fibre Channel Front Panel Display

1 Ethernet connection.
2 A muilt-function button, this button scrolls you through the menu list.
After a menu is selected, this button scrolls you down the list of menu
selections. Also, if you have selected an item that requires a numeric entry,
this button decrements the number.
3 A muilt-function button, this button scrolls you through the menu list.
After a menu is selected, this button scrolls you down the list of menu
selections. Also, if you have selected an item that requires a numeric entry this
button decrements the number.
4 A multi-functions button, pressing this button takes you to the menu top
level. Pressing the button again at the top menu level, turns off the display. If
you have select a menu entry that has many selections this button will “tab”
you through the selections. If you are entering an IP address, for example, this
button scrolls you through the address, place by place.
5 Enters a selection.
6 Front Panel Display.

2-4 StorageWorks Fibre Channel Storage Switch Sevice Guide

Isolating a System Fault
Loopback paths are built into the Switch hardware for use by diagnostics. A
loopback path test within the Switch verifies the proper internal Fibre Channel
port logic functions and the paths between the interfaces and central memory.
The Switch’s diagnostics also support external loops for testing interface cards
and their GBIC modules in cross port configurations. These port-to-port
diagnostics allow checking installed fiber cables, and provide port fault
isolation.

Removing Power
When all data-transferring processes external to the Switch are completed,
removing power from the Switch does not disrupt the Fabric.
NOTE: Error messages are stored in RAM and are lost when power is removed from the
Switch. Access the error message log to view and note any error messages before
removing power from the Switch.

Status and Activity Indicators
The following status activity indicators apply to G_Port and FL_Port interface
cards.
NOTE: FL_Port interface cards have an additional green LED (visible from the front of the
Switch) to distinguish them from G_Port interface cards.

Front Panel LED Power Indicator
The color and flash speed of the power LED, as described in Table 2-1,
indicates Switch status.

Troubleshooting 2-5

Table 2-1
Power LED Status Indicators
Power LED

Definition

No light showing

Power not applied

Steady Power LED

Normal power-on indicator

Flashing Power LED

Switch failed POST and is not functioning,
although power is applied.

Front Panel LED Port Indicators
The color and flash speed of each port’s LED, as described in Table 2-2,
indicates the individual port’s status.

Table 2-2
Port LED Status Indicators
Port’s LED

Status

No light showing

No light or signal carrier (no module, no cable) for
media interface LEDs

Steady yellow

Receiving light or signal carrier, but not yet online

Slow yellow

Disabled (result of diagnostics or portDisable
command). Flashes every 2 seconds.

Fast yellow

Error, fault with port. Flashes every 1/2 second.

Steady green

Online (connected with external device over cable)

Slow green

Online, but segmented (loopback cable or
incompatible Switch) flashes every 2 seconds.

Fast green

Internal loopback (diagnostic). Flashes every 1/2
second.

Flickering green

Online and frames flowing through port.

2-6 StorageWorks Fibre Channel Storage Switch Sevice Guide

Initialization Steps
At power-on or reset, the following steps are initiated:
1. Bootrom Memory Test.
2. Switch operating system initialization.
3. Hardware initialization, including resets, internal addresses assigned to
G_Port and FL_Port ASICs, serial port initialized, front panel initialized
4. Full POST is performed.
5. Link initialization; receiver/transmitter negotiation to bring connected
ports online.
6. Fabric analysis; the Switch checks for ports connected to other Fabric
elements. If there are other Fabric elements connected, it identifies the
master Switch.
7. Address assignment; after the master Switch is identified, port addresses
may be assigned. Each Switch tries to keep the same addresses that were
previously used. These are stored in the Switch’s configuration flash
PROM.
8. Routing table construction; after addresses are assigned, the unicast
routing tables are constructed.
9. Enable normal N_Port operation.
This completes the initialization sequence

Power-On Diagnostics
When an error is detected during POST, it may be written to the system error
log and is available for analysis through Telnet.
When an error disables the Switch from completing the boot process – a fatal
error – an error is displayed on the front panel.
If the error occurred in the POST processing, before the Switch is able to
display the boot failure, causes the Switch’s front panel power on indicator
flashes (instead of its normal steady light) indicating the Switch failed the boot
process and is not operating. Refer to the User’s Guide for more information.
NOTE: A Switch boot failure indicates the Switch must be taken offline to be repaired or
replaced. Contact your service representative.

Troubleshooting 2-7

Diagnostics
The following tests are available on the front panel and through a Telnet
session. Details on using the front panel and for accessing them from the front
panel follow.
NOTE: Accessing the Switch through Telnet provides a more detailed response indicating
the Switch’s condition and allows the use of some commands which do not have an
equivalent front panel command.

Bootrom Diagnostics
The Bootrom Memory Test is executed at Power-on. See Appendix B, Bootrom
Diagnostics for a complete description.

Test Menu
Pressing <Enter> with the Test Menu displayed on the front panel, displays
the following test options:
■

Switch Offline

■

Switch Online

■

Memory Test

■

Port Register Test

■

RDRAM Test

■

Central Memory Test

■

Port Loopback Test

■

Cross Port Test

■

Spin Silk Test

■

Display Test

■

Push Button Test

Test descriptions follow.

2-8 StorageWorks Fibre Channel Storage Switch Sevice Guide

Switch Offline
Press <Enter> with Switch Offline displayed, as follows:
Switch Offline:
Accept? Yes

Any test with the potential to interrupt data transmission requires taking the
Switch offline. If the Switch is not offline, a prompt is displayed before the test
continues.

Switch Online
Press <Enter> with Switch Online selected as follows:
Switch Offline:
Accept? Yes

When the Switch is offline, continue the test.

Memory Test
Press <Enter> while Memory Test is selected:
System Memory Test at
0 X 1099a10 len 1832160

If the memory tests OK, the front panel displays:
0 X 1099a10 len 1832160
Memory Test Successful

If this test produces a failure, replace the CPU’s memory module card.

Troubleshooting 2-9

Port Register Test
Pressing <Enter> while Port Register Test is selected displays a reminder to
take the Switch offline if it is not offline. If the message is displayed, take the
Switch offline as described in Switch Offline.
Pressing <Enter> starts the test, which checks the Switch’s G_Port and
FL_Port ASIC registers. The ports tested are 0 to 16 including the G_Port and
FL_Port ASIC for each port, plus the G_Port and FL_Port ASIC for Switch’s
internal port.
If the port register is all right, the panel displays:
Port Reg Test
Reg Test OK

RDRAM Test
This test checks the memory on the FL_Port interface cards. Pressing <Enter>
while rdram Test is selected displays a reminder to take the Switch offline,
if it is not offline. If the message is displayed, take the Switch offline as
described in section Switch Offline.
If the Switch passes the test:
Rdram Test: Passed

Central Memory Test
Pressing <Enter> with Central Memory Test selected displays a reminder to
take the Switch offline. If the message is displayed, take the Switch offline as
described in section Switch Offline.
If the Switch passes the test:
Central Memory Test: Passed

2-10 StorageWorks Fibre Channel Storage Switch Sevice Guide

Port Loopback Test
Pressing <Enter> while Port Loopback Test is selected displays a reminder to
take the Switch offline, if it is not offline. If the message is displayed, take the
Switch offline as described in section Switch Offline.
The Port Loopback Test is an internal test which continues to run until you
press any button. This test checks all of the Switch’s internal firmware and
circuitry including the Switch’s G_Port and FL_Port ASICs.
While the test is running, all interface module front panel LEDs rapidly flicker
green indicating that the test is finding no errors and is processing.
To stop the test, press any button, Aborted is displayed:
Port Loopback Test: Passed

Cross Port Test
The Cross Port Test checks communication between different interface
module ports on the same Switch, the Switch’s G_Port and FL_Port ASIC and
CPU, the interface modules and their GBIC modules. A Switch setup to run
this test must have all ports on the Switch interconnected, as shown in Figure
2-2. G_Ports must connect to G_Ports and FL_Ports must connect to FL_Ports.

SHR-1218

Figure 2-2. Switch Set to Run Cross Port Test.

Troubleshooting 2-11

NOTE: All ports on the Switch must be connected or else the Switch shows an error
condition when disabled. If the Switch is enabled at least one set of ports must be cross
connected or if using the single port test it must be cross connected, or else the Switch
shows an error condition.

If an error is detected during the test, the error is displayed on either the front
panel display or during the Telnet session. Refer to Cross Port Test Error
Messages for a detailed listing of these error messages, probable cause of the
error, and possible corrective action.
NOTE: When running the cross port test, you must set the operating mode value to 0 or
1. Modes 2 and 3 do not send out the ELP used to discover Switches. If the ELP is not
sent, the Switch does not know the port is connected to another port on the same Switch
and the test fails.

Spin Silk Test
The Spin Silk Test checks the Switch at full operating speed without
monitoring each port’s transmission characteristics. A generated frame is
passed from port to port at the full 1-Gbps rate.
NOTE: For the Spin Silk Test to run correctly all ports must be present and cabled.

Because the CPU is not comparing data on each frame as with the other two
frame tests, the DIAG-DATA error is never reported during spin silk.
However, the other error messages defined for crossPortTest and their
corresponding probable causes and actions are applicable to the spin silk test.
Pressing <Enter> while Spin Silk Test is selected displays a reminder to
take the Switch offline, if it is not offline. If the message is displayed, take the
Switch offline as described in the section Switch Offline.
Pressing <Enter> starts the Spin Silk Test and displays:
SpinSilk: Press Any
Button to terminate

After any button is pressed, and the test has shown no failure, Passed is
displayed.
If an error is found during the test, the error is displayed on either the front
panel display or through Telnet. Refer to SpinSilk Test Error Messages for a
detailed listing of these error messages.

2-12 StorageWorks Fibre Channel Storage Switch Sevice Guide

NOTE: When running the Spin Silk Test, you must set the operating mode value to 0 or 1.
Modes 2 and 3 do not send out the ELP used to discover Switches. If the ELP is not sent,
the Switch does not know the port is connected to another port on the same Switch and
the test fails. Refer to Operating Mode for definitions of the four modes.

Display Test
Pressing <Enter> while Display Test is selected causes a series of test
characters to be displayed. Use this test to determine if the display is
functioning properly.

Push Button Test
Pressing <Enter> while Push Button Test is selected displays:
Push Button Test

1234

1 & 4 to exit

Pressing any front panel button causes the corresponding button number to
move to the second line. To exit this test, simultaneously press the 1 (down)
and 4 (enter) buttons.
NOTE: If you press buttons 1 and 3 simultaneously the Switch reboots

Diagnostic Error Messages
Error messages are stored in volatile RAM and are lost whenever power is
removed from the Switch. Access the error message log to view error
messages before removing power.
Error messages are displayed on the front panel display and through Telnet.
These messages are also stored in the system log and are displayed when the
errShow command is executed.
NOTE: If you run the portStatsShow or the diagShow command prior to running a test,
errors may appear as a result of the normal synchronization process. These errors should
be addressed if the number of errors found increases when running the portStatsShow
command again.

Troubleshooting 2-13

The front panel displays an error messages, as shown:
Feb 12 08:48:29
Err DIAG-MEMORY-1

The first line displays the date and time the error was found, the second line
displays the error text.
NOTE: The last character in the bold portion of the following Telnet messages indicates
the error level with 1 being the highest level, critical. Level 2 is a warning and Level 3 is
informational.

Telnet displays the full error message. The prefix Err is included at the
beginning of each second line on the front panel display.
Where multiple probable cause and corrective actions are listed following an
error message, they are listed with the most probable first and the least
probable last.
If any port fails during a diagnostic test, it is marked BAD in the status display
and is ignored (not tried) until the system is rebooted or a diagClearError is
issued.
To retest a port which has been marked BAD, clear the port and set to OK
using the diagClearError (port#) command. This command clears the port
status only and does not clear the logs or change the port’s condition. The
diagClearError(port#) command should only be used during diagnostic
procedures to reset a bad port for retest.

Port Register Test Error Message
The port register test is initiated by issuing the portRegTest command during a
Telnet session. Pressing <Return> after entering the command starts the test. If
the test does not find an error, there is no outputTelnet. If an error is found, the
following messages are displayed:
Feb 12 08:48:29
DIAG-REGERR,1
Port N,”regname” Register Error, is 0xXXXX sb 0xXXXX
(regOffset 0xXXXX, physical address 0xXXXX, with 0xXXXX mask)

2-14 StorageWorks Fibre Channel Storage Switch Sevice Guide

In this error message, one of the following descriptions replaces the term
(regname):
■

WordsTX – Words transmitted

■

WordsRx – Words received

■

FramesTx – Frames transmitted

■

FramesRx – Frames received

■

Cl2FrmRx – Class 2 frames received

■

Cl3FrmRx – Class 3 frames received

■

LinkCtlFRx – Link control frames received

■

MCastRx – Multicast received

■

RDY_XmitPri – Number of times R_RDY has transmit priority higher
than frames

■

NoTxCredit – No transmit credit available.
NOTE: These register names are the most probable to be displayed in the port register
test error message, however there are other possible register names.

A port register test error message is probably caused by:
■

Failure of the G_Port and FL_Port ASIC

■

Failure of the interface module

■

Interface module connector.

Troubleshooting 2-15

RDRAM Test Error Message
The RDRAM test is initiated with the Telnet command rdramTest. Pressing
<Return> after entering the command starts the test.
This section shows the error output, the probable cause for the error, and the
suggested action.
If the test does not find an error, there is no output during the Telnet session. If
an error is found, the following message is displayed:
Feb 12 08:48:29
000 DIAG-RAMBUSTO, 1
R RAMBUS Timeout, port XX tbuf_acc bit 31 stuck high.

Probable cause: FL_Port interface card memory failure
Action:

Replace FL_Port interface card

Feb 12 08:48:29
000 DIAG-RAMBUSPERR, 1
RAMBUS Parity Error, port XX, address 0xXXXX offset 0xXXXX.

Probable cause: FL_Port interface card memory failure
Action:

Replace FL_Port interface card

Feb 12 08:48:29
000 DIAG-RAMBUSEOFC, 1
R RAMBUS EOF Location Error, port XX, address 0xXXXX, counter is
XX sb XX.

Probable cause: FL_Port interface card failure
Action:

Replace FL_Port interface card

Feb 12 08:48:29
000 DIAG-RAMBUS, 1
R RDRAM Error, port XX, address XXXX offset 0xXX is 0xXX sb 0xXXXX\n")

2-16 StorageWorks Fibre Channel Storage Switch Sevice Guide

Probable cause: FL_Port interface card failure
Action:

Replace FL_Port interface card

Central Memory Test Error Messages
The central memory test is started with the Telnet command
centralMemoryTest. Pressing <Return> after entering the command starts the
test. If the test does not find an error, there is no output from Telnet. If an error
is detected, the Switch generates the following output:
Feb 12 08:48:29
0000DIAG-CMEM, 1
Central Memory Error, bufline 0xXXXX offset 0xXXXX is
0xXXXX sb 0xXXXX

Probable cause: Motherboard failure
Action:

Replace chassis and attached motherboard

Feb 12 08:48:29
0000DIAG-CMRS, 1
Central Memory Read Short, expected nn bytes,
read nn bytes
(Starting from Bufline 0xxx, offset 0xxx)

Probable cause: Motherboard failure
Action:

Replace chassis and attached motherboard

Feb 12 08:48:29
0000DIAG-CMTO, 1
00Central Memory Timeout, port 16 mem_ctl register
bit 0 stuck high.

Probable cause: Motherboard failure
Action:

Replace chassis and attached motherboard

Troubleshooting 2-17

Loopback Test Error Messages
The loopback test is started with the portLoopbackTest nFrames command
over Telnet where, nFrames is the number of frames for the test to run. See
portLoopbackTest on for more information.
If an error is found, one or more of the following error messages is displayed.
One of the following register names is displayed in the error message with the
message replacing the term (regname):
■

Enc_in – Encoding error, inside frame

■

CRC_err – Cyclic redundancy check on frame failed

■

TruncFrm – Truncated frame

■

FrmTooLong – Frame too long

■

BadEOF – Bad end of file

■

Enc_out – Encoding error, outside frame

■

BadOrdSet – Bad symbol on fiber-optic cable

■

DiscC3 – Discarded Class 3 frames.

Feb 12 08:48:29
0000DIAG-ERRSTAT, 1
00Port N regname error counter is nnnn sb 0

Probable cause: Failure of G_Port and FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of interface module
Action:

Replace interface module

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Feb 12 08:48:29
0000DIAG-TIMEOUT, 1
00Port N receive timeout.

2-18 StorageWorks Fibre Channel Storage Switch Sevice Guide

Probable cause: Failure of G_Port and FL_Port ASIC
Action:

Replace Interface module

Probable cause: Failure of interface module
Action:

Replace interface module

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Feb 12 08:48:29
0000DIAG-DATA, 1, PortX:pass nn
00Frame Tx4>->Rx4 payload byte offset nn is 0xXX sb
0xXX
(CMEM: SOF@ bufline/offset 0xXXXX/0xXX, error @
physical 0xXXXX/0xXX Only one bad byte -- or -Last bad byte at offset nn.

Probable cause: Failure of motherboard
Action:

Replace motherboard

Probable cause: Failure of interface module
Action:

Replace interface module

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Feb 12 08:48:29
0000DIAG-STATS, 1
00(regname) counter wrong on port nn, is nn sb nn

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of Interface module

Troubleshooting 2-19

Action:

Replace interface module

Feb 12 08:48:29
0000DIAG-INIT, 1, portLB: pass nn
00Port N failed to go active after initialization

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of interface module
Action:

Replace interface module

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Probable cause: Failure of motherboard
Action:

Replace motherboard

Feb 12 08:48:29
0000DIAG-PORTDIED, 1, portLb: pass nn
00Port N was active but went inactive (offline).

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of interface module
Action:

Replace interface module

Feb 12 08:48:29
0000DIAG-XMIT-1, portX: pass nn
00Cannot transmit frame from port N, fcRequest returns nn

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

2-20 StorageWorks Fibre Channel Storage Switch Sevice Guide

Probable cause: Failure of Interface module
Action:

Replace Interface module

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace Interface module

Cross Port Test Error Messages
The cross port test is initiated by issuing the crossPortTest nFrames
command through Telnet where, nFrames is the number of frames to run.
See crossPortTest for more information.

If the test does not find an error, there is no output through Telnet. One of
the following register names is displayed in the sample error messages.
Replaces the variable regname, as follows:
■

Enc_in – Encoding error, inside frame

■

CRC_err – Cyclic redundancy check on frame failed

■

TruncFrm – Truncated frame

■

FrmTooLong – Frame too long

■

BadEOF – Bad end of file

■

Enc_out – Encoding error, outside frame

■

BadOrdSet – Bad symbol on fiber optic cable

■

DiscC3 – Discarded Class 3 frames.

Feb 12 08:48:29
0000DIAG-ERRSTAT, 1, spinSilk: pass nn
00Port N regname error counter is nnnn sb 0

Probable cause: Failure of fiber cable
Action:

Replace fiber cable

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

Probable cause: Failure of G_Port or FL_Port ASIC

Troubleshooting 2-21

Action:

Replace interface module

Probable cause: Failure of fiber cable
Action:

Replace fiber cable

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of interface module
Action:

Replace interface module

Probable cause: Failure of motherboard
Action:

Replace motherboard

Feb 12 08:48:29
0DIAG-DATA, 1, PortX:pass nn
00Frame Tx4>->Rx4 payload byte offset nn is 0xXX sb 0xXX
(CMEM: SOF@ bufline/offset 0xXXXX/0xXX, error @ physical
0xXXXX/0xXX

Probable cause: Failure of fiber cable
Action:

Replace fiber cable

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

2-22 StorageWorks Fibre Channel Storage Switch Sevice Guide

Probable cause: Failure of motherboard
Action:

Replace motherboard

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

Probable cause: Failure of interface module
Action:

Replace interface module

Feb 12 08:48:29
0000DIAG-STATS, 1, portLb: pass nn
00regname counter wrong on port N, is nnnn sb nnnn

Probable cause: Failure of fiber cable
Action:

Replace fiber cable

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of fiber cable
Action:

Replace fiber cable

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Troubleshooting 2-23

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of Interface module
Action:

Replace interface module

Probable cause: Failure of motherboard
Action:

Replace motherboard

Probable cause: Failure of GBIC module connector
Action:

Replace GBIC module

Probable cause: Failure of Interface module
Action:

Replace interface module

Probable cause: Failure of G_Port or FL_Port ASIC
Action:

Replace interface module

Probable cause: Failure of GBIC module
Action:

Replace GBIC module

SpinSilk Test Error Messages
The SpinSilk test is started with the Telnet spinSilk nMillions command where,
nMillions is the number of frames for the test to execute expressed as millions
of frames.
If you do not include the nMillions parameter, the spinSilk test runs until you
terminate the process by pressing <return>.
If the test does not find an error, there is no output through Telnet. If an error
is found, the following error messages are displayed.

2-24 StorageWorks Fibre Channel Storage Switch Sevice Guide

Feb 12 08:48:29
0000DIAG-PORTSTOPPED, 1
0Port N no longer transmitting, ftx counter stuck
at nnnn

Error Messages by Firmware Module
Table 2-3 shows the error messages organized by firmware module.

Table 2-3
Error Messages by Firmware Module
Module
Flood

Error Severity
INVLSR (3)

Explanation

Action

An unknown Link State
Record has been received
from a neighbor Switch.

Check that all paths and
routing tables are correct
using the commands
uPathShow <domain>, or
uPathAllShow.
If the paths are not correct
reboot the neighbor Switch
that sent the wrong data.
Check the paths and routes
again. If they are still
incorrect, reboot the local
Switch.

FSPF

LSRLEN (2)

The local Switch is trying to
create a Link State Update
that exceeds the maximum
length.

Check that all paths and
routing tables are correct. If
they are not, reboot the local
Switch.

BADSRC (3)

The neighbor Switch domain
ID has changed, without the
link going down.

The system automatically
recovers.
continued

Troubleshooting 2-25

Table 2-3
Error Messages by Firmware Module continued
Module

Error Severity

Explanation

Action

INPORT (2)

The input port in the IU
received by the path
selection task is out of range.

Check that all paths and
routing tables are correct. If
they are not correct, reboot
the local Switch.

MSG (2)

The path selection task has
received an unknown
message from another task.

Check that all paths and
routing tables are correct. If
they are not, reboot the
neighbor Switch.
Check the paths and routes
again. If they are still
incorrect, reboot the local
Switch.

REMDOMAI N (2)

The message received from
a neighbor Switch has a
source domain ID out of
range.

Check that all paths and
routing tables are correct. If
they are not, reboot the
neighbor Switch.
Check the paths and routes
again. If they are still
incorrect, reboot the local
Switch.

SCN (3)

The path selection task has
received a State Change
Notification message that it
does not recognize.

Check that all paths and
routing tables are correct. If
they are not, reboot the local
Switch.

VERSION (2)

The FSPF protocol version
running on the local Switch
is lower than a neighbor’s
Switch.

Check the protocol version
on both Switches using the
fspfShow command. If the
two versions differ, update
the software on the local
Switch.
continued

2-26 StorageWorks Fibre Channel Storage Switch Sevice Guide

Table 2-3
Error Messages by Firmware Module continued
Module
HLO

Error Severity
INVHLO (1)

Explanation

Action

The path selection task has
received a HELLO message
with an invalid parameters
from a neighbor Switch.

Check that all paths and
routing tables are correct. If
they are not, reboot the
neighbor Switch.
Check the paths and routes
again. If they are still
incorrect, reboot the local
Switch.

LSDB

LSID (2)

A Link State Record received
as part of a Link State
Update has an out of range
domain ID.

Check that all paths are
correct. If any path is
missing to any Switch in any
part of the Fabric, reboot the
Switch with the missing
path.

MCAST

ADDBRANC H (2)

A branch is being added to a
broadcast or multicast tree,
but the parameters are
incorrect.

If this is caused by a
configuration command,
check the parameter values.
Otherwise, check the
broadcast tree with the
bcastShow command. If the
tree is incorrect, reboot the
local Switch.

ADDPORT (3)

A multicast routing table
programming failed.

Run the portLogShow
command. Contact
Customer Support.

NOPARENT (2)

An error occurred while
computing a broadcast or
multicast tree.

Run the LSDbAllShow
command. Contact
Customer Support.

NOPARENT LSR (2)

An error occurred while
computing a broadcast or
multicast tree.

Run the LSDbAllShow
command. Contact
Customer Support.

REMPORT (3)

Removing an entry from a
multicast routing table failed.

Run the portLogShow
command. Contact
Customer Support.
continued

Troubleshooting 2-27

Table 2-3
Error Messages by Firmware Module continued
Module

NBFSM

Error Severity

Explanation

Action

SPFCOST (3)

An error occurred with
computing the multicast path
tree.

Run the LSDbAllShow
command. Contact
Customer Support.

NGBRSTAT E (2)

An error occurred in the
neighbor Finite State

Check the neighbor’s state
with the nbrStateShow
command.
If the state is not
NB_ST_FULL, force a state
change with the portDisable
command followed by
portEnable.
After a few seconds, if the
state is not NB_ST_FULL,
reboot both the local and
remote Switches.

UCAST

SYS

ADDPATH (1)

A static path configuration
failed.

Check command
parameters.

RELICPDB (2)

The path selection task
received an E_Port SCN, but
the port was already ISL.

Run the ucastAllShow
command. Contact
customer support.

SPFCOST(3 )

An error occurred with
computing the unicast path
tree.

Run the LSDAllShow
command. Contact
customer support.

QREAD (1)

A task was unable to receive
a message.

Run the command
show<queue ID> with the
ID of the queue reported in
the error. Contact customer
support.

QWRITE (1)

A task was not able to post a
message on a queue.

See MQ-QWRITE Error on
page -7 for more
information.

NOMEM (1)

The system’s memory is
exhausted.

Reboot the Switch. Contact
customer support.
continued

2-28 StorageWorks Fibre Channel Storage Switch Sevice Guide

Table 2-3
Error Messages by Firmware Module continued
Module

Error Severity

TIMERS

Explanation

Action

SYSCALL (2)

A system call into VxWorks
failed.

Reboot the Switch. Contact
customer support.

ENQFAIL (1)

An error occurred while
setting a timer.

Reboot the Switch. Run the
commands actTimersShow
and timerShow <timer ID>.
Contact customer support.

MSG (3)

The timer task received an
unknown message.

Contact customer support.

Panic Errors
This module includes errors that cause a system panic to occur. A system
panic causes the Switch to reboot. The PANIC error is stored in flash memory
with a stack trace, local stack content and local register content at the time the
error occurred. To view the trace, allow the Switch to reboot and issue the
traceShow command. PANIC errors have the highest severity (0). If the
trace was caused by a PANIC error, the first line displays:
Reset reasons 0x100: Panic
NOTE: Use the traceShow command should be used to identify PANIC errors as the
errShow command is not useful in this case.

Table 2-4
Panic Errors
Error Severity

Explanation

Action

FREETIMRLSD (0)

A task freed an already free timer.

Issue the traceShow command.
Contact customer support.

INCONSiSTENT (0)

An internal inconsistency has been
detected.

Issue the traceShow command.
Contact customer support.

MALLOC (0)

The Switch has run out of memory.

Issue the traceShow command.
Contact customer support.

MSGQCREATE (0)

A message queue could not be created.

Issue the traceShow command.
Contact customer support.
continued

Troubleshooting 2-29

Table 2-4
Panic Errors continued
MSGQDELETE (0)

A message queue could not be destroyed.

Issue the traceShow command.
Contact customer support.

SEMCREATE (0)

A semaphore could not be created.

Issue the traceShow command.
Contact customer support.

SEMDELETE (0)

A semaphore could not be destroyed.

Issue the traceShow command.
Contact customer support.

TASKSPAWN (0)

A task could not be created.

Issue the traceShow command.
Contact customer support.

TIMEUSECNT (0)

A timer was not released after expiration.

Issue the traceShow command.
Contact customer support.

ZOMTIMKILL (0)

An attempt was made to kill a timer that
was in ‘zombie’ state.

Issue the traceShow command.
Contact customer support.

ZOMTIMSET (0)

An attempt was made to set a timer that
was in ‘zombie’ state.

Issue the traceShow command.
Contact customer support.

Chapter

Repair and Replacement

Repair and Replacement Overview
This chapter covers the recommended and supported field repair and
replacement for the Switch. This chapter includes:
■

Field Replaceable Units (FRU) Definition

■

Servicing the Switch
NOTE: Any Switch repair or part replacement that is not explained in this chapter must be
performed at a factory authorized repair facility.

Field Replaceable Units (FRU) Definition
The following table lists the field replaceable units available for the Switch.

3-2 StorageWorks Fibre Channel Storage Switch Service Guide

Table 3-1
Field Replaceable Units
Description

Part Number

Switch 16-port without
GBICs

30-56042-S2

Switch 8-port without
GBICs

30-56042-S1

Motherboard

29-34243-01

(127660-002)

(127660-001)

(401930-001)
CPU Board

29-34244-01
(401931-001)

G-Port Board

29-34245-01
(401932-001)

Power Supply

29-34246-01
(401933-001)

3" Fan with Tachometer

29-34249-01
(401934-001)

Front Panel subassembly

29-34468-01

Memory SIMM 16MB

20-47330-17

GBIC - FC SW

FE-09086-0
(234458-001)

GBIC - FC LW

FD-89504-01

Contact your sales representative for price, delivery, and shipping
information.

Repair and Replacement 3-3

Servicing a StorageWorks Switch
Beginning with Replacing Interface Cards, the following sections cover
servicing StorageWorks Switches.
WARNING: Before removing the cover, turn off the Switch and disconnect it
from the power source.

Replacing Interface Cards
After taking the system off-line and removing power, replace the interface
card or one of its GBIC modules as follows:
Caution: The motherboard and the interface cards contain electrostatic sensitive devices.
Before working on the Switch, it is recommended you use ESD precautions, such as
wearing a wrist-grounding strap connected to chassis ground.

Removing a Switch Cover
To remove a Switch cover:
Warning: Attempting to remove the cover by lifting at the rear without first
pushing the cover to the rear damages the cover and may possibly cause the
unit to not meet EMI standards.

1. Remove the screws at the rear and sides of the unit, moving the cover at
least 1/2 inch to the rear as shown in Figure 3-1.
2. Lift the cover off.

3-4 StorageWorks Fibre Channel Storage Switch Service Guide

0
2
4

12
14

1
3
5
7
9

11
13

SHR-1219A

Figure 3-1. Removing the Switch Cover

Removing an Interface Card
To remove an interface card:
1. Remove any cabling attached to the interface card’s GBIC modules.
2
1

0
2
4

12
14

1
3
5
7
9

11
13

SHR-1220A

Figure 3-2. Removing an Interface Card
1 Screw securing card to front
3 Locking bar
panel
2 Interface card

6 Card extractor

Repair and Replacement 3-5

2. Remove the GBIC modules by pushing the locking bar from the left side
of the GBIC to the right.
3. Remove the screw (Figure 3-2, item 1) securing the interface card to
the front panel.
4. Remove the side screw from the rear card bracket.
5. Loosen the five rear card bracket screws (Figure 3-3, item 2) 2 to 3
turns, but do not remove the screws.

2
SHR-1379

Figure 3-3. Loosing the Rear Interface Card Bracket

6. Loosen the retaining nut (Figure 3-3, item 1) that mounts the rear card
guide to the chassis (2 to 3 turns) but do not remove the nut.
CAUTION: When removing an interface card, the rear card bracket must be
loosened first. This prevents damage during card removal.

7. To remove the board, lift up on the card extractor located at the rear of
the card and simultaneously lift the front of the board by gripping the
GBIC carrier. Gently lift the interface card from the chassis; use care
not to damage any components mounted on the assembly or
motherboard connector.
8. After the interface card is removed from the chassis, place it in a
protective anti-static bag.
9. If you do not replace the card, install an interface card filler panel to
cover the unused position in the front panel and secure it with a 4-40
5/16 inch Phillips flat head screw.

3-6 StorageWorks Fibre Channel Storage Switch Service Guide

CAUTION: Filler panels ensure EMI integrity. When upgrading a Switch, the filler
panel is removed and an interface card is installed. If a card is removed, the
filler panel must be re-installed. For a filler panel replacement, contact Compaq
Support.

Installing an Interface Card
1. Install the interface card as follows:
2. Remove the blank panel and screw from the Switch.
3. Engage the interface card in the card slots at the front and rear of the
card.
4. Keeping the card parallel to the chassis, carefully press the interface
card down, until the connector is engaged. Carefully continue pressing
down, until the connector is fully engaged.
5. Reinstall the mounting screw from the front panel to the interface card.
6. To ensure a tight fit, while pushing forward on the rear bracket, tighten
the screws and retaining nut on the rear card bracket. Be sure the card
slots engage each interface card properly.
7. Re-install the side screw on the rear card bracket.
8. Install GBIC modules through the front panel.
9. Replace the Switch cover and power cord.
10. Reconnect cabling and power up the Switch.

Replacing a GBIC Module
The dual channel interface card accepts two GBIC modules. These modules
are installed and removed by sliding the interface cards in from the front of the
unit, as shown in Figure 3-3. In the figure, the GBIC Module is called out as
1, and the Card Extractor is 2.
NOTE: The GBIC module is installed after the interface card has been installed in the
chassis. You cannot install an interface card if it has a GBIC module installed.

Repair and Replacement 3-7

1
SHR-1378

Figure 3-4. Interface Card - Media Interface Module and Card Extractor
NOTE: SNMP traps are generated on GBIC insertion and removal.

To replace an IBM GBIC module into an interface card:
1. On the front of the GBIC module is a locking bar, ensure it is to the
right side of the GBIC
2. Insert the GBIC module until its connector is firmly seated into the
appropriate port.
3. When firmly seated, lock the GBIC module in the slot by pushing the
locking bar to the left side of the GBIC. DO NOT force the locking bar,
reset if necessary.

Replacing a CPU Card
Replacing a CPU card involves removing the old card and installing a new
card. When you replace a CPU card you must install a new license key. Refer
to Appendix C.

Removing a CPU card
Referring to Figure 3-4, remove the CPU card as follows:
1. Disconnect the Switch from the power source and remove the cover,
front panel display connector 2 and power LED connectors 5.

3-8 StorageWorks Fibre Channel Storage Switch Service Guide

2
3

5
0
2
4

12
14

1
3
5
7
9

11
13

SHR-1213A

Figure 3-5. Removing a CPU Card

NOTE: Note the position of the colored edge of the ribbon cable before removing it from
the connector. This connector is not keyed. The colored edge of the flat ribbon connector
is toward the edge of the CPU card with the CPU memory module.

2. Remove the three mounting screws 4 holding the CPU card to the
standoffs.
3. Carefully disconnect the CPU-to-motherboard connector by lifting the
CPU board straight up.
CAUTION: Do not tilt the CPU card as you lift to disconnect the connector as
you may bend the pins on the motherboard. The CPU card contains static
sensitive components. Use ESD precautions when handling this card.

4. Store the CPU card in a protective anti-static bag.

Installing a CPU Card
If the power supply was also replaced, be sure the connectors from the power
supply have been properly replaced on the motherboard.
Install a CPU card as follows:
1. Check to make certain the memory module is secure on the CPU card.
2. Carefully position the card so that it is aligned with the standoff
mounting posts, then firmly press the connector on the bottom of the
CPU card onto the mating motherboard connectors.

Repair and Replacement 3-9

3. Replace the 3 screws securing the CPU card to the standoffs. Tighten
the screws snugly but do not over tighten.
CAUTION: Over tightening the hold down screws may damage the CPU card.

4. Replace the front panel ribbon connector after checking that the marked
edge of the ribbon connector is properly oriented.
5. Replace the front panel LED connector.

Replacing a Memory Module
If a memory test detects a failure, replace the memory module on the CPU
card using the following procedure. The memory module is item 1 in Figure
3-5.
NOTE: You can replace the memory module without removing the CPU card, although it is
a tight fit.

Replace a memory module as follows:
1. Press the retainers at each edge of the memory module to release the
memory module from its connector.

2. Press the memory module forward until the memory module is clear of
the keying pin at the connector edge.
CAUTION: The memory module contains static sensitive components. Use ESD
precautions when handling this card.

3. Lift the memory module free of the connector and place it in a static
shielded container.

4. Locate the keying hole on the memory module, align it with the keying
pin on the connector, and then insert the memory module into the
connector at an angle pressing it into the connector until it is evenly
seated across the connector.
5. Move the memory module to vertical until the retainers on each side of
the module engage.

3-10 StorageWorks Fibre Channel Storage Switch Service Guide

Replacing the Front Panel Assembly
The front panel assembly contains the front panel display, the front panel
buttons, the ON/OFF LED, and the Switch’s front panel.

2
1

0
2
4

12
14

1
3
5
7
9

11
13

SHR-1222A

Figure 3-6 Removing the Front Panel Assembly

Removing the Front Panel
Remove the front panel assembly as follows:

1. If the Switch is online, take the Switch off-line as described in the
section Switch Offline.
2. With the Switch is off-line, turn off the power Switch and remove the
power cord.
3. Remove the Switch cover as described in the section Removing a Switch
Cover.

4. Unplug the front panel display flat-ribbon connector 2 from the CPU
module with a gentle upward motion. Do not twist or rock the connector
as you may damage the pins. This cable is connected to the front panel
assembly and should not be removed from it.
Using the same care, remove the power LED connector 1 from the CPU
module.
NOTE: The cables are part of the front panel assembly. The front panel assembly
replacement part includes the installed cables.

5. Remove the screws at the side and bottom securing the front panel to the
chassis.

Repair and Replacement 3-11

6. Remove the chassis assembly by gently pulling the assembly free of the
chassis.

Installing the Front Panel
To install the front panel assembly as follows:
1. Replace the chassis assembly by gently pushing the assembly into the
chassis.
2. Replace the screws at the side and bottom securing the front panel to the
chassis.
3. Using the same care, replace the power LED connector to the CPU
module.

4. Plug in the front panel display flat-ribbon connector to the CPU module
with a gentle downward motion. Do not twist or rock the connector as
you may damage the pins. This cable is connected to the front panel
assembly.
5. Replace the Switch cover.
6. Plug in the power cord and turn on the power Switch.
7. Bring the Switch online, as described in Switch Online.

Replacing the Power Supply
Ensure that the power is removed from the Switch by turning off the power
and removing the power cord.

Removing the Power Supply
There are no user-serviceable parts inside the power supply chassis. Opening
the power supply voids its warranty and certification.
Remove the power supply as follows:
1. Remove interface card 1, which is the card closest to the CPU card.
CAUTION:: The interface card contains static sensitive components. Use ESD
precautions when handling this module

3-12 StorageWorks Fibre Channel Storage Switch Service Guide

1
2

3
4

SHR-1214A

Figure 3-7. Power Supply Side of Switch, Cover Removed

2. Remove the CPU card 2 as described in the section Replacing a CPU
Card.

3. Remove the power supply connectors 3 from the motherboard.
4. Remove the two screws from the bottom of the unit 4.
5. Remove the power supply connector 5 from the motherboard.
6. Unclip the ferrite holding the power supply wires to the side of the unit
and gently pull the wires free of the ferrite.

7. Remove the nuts that secure the power supply to the chassis.
CAUTION: The CPU card contains static sensitive components. Use ESD
precautions when handling this card.

NOTE: Make note of the connector’s position on the motherboard before disconnecting.

8. Carefully lift the power supply from the chassis.

Repair and Replacement 3-13

Installing the Power Supply
To install the power supply, refer to the section Removing the Power Supply,
which is the reverse of the installation procedure.

Replacing the Main Chassis Fans
Replacing the main chassis fans involves removing the existing fan assembly
and installing a new assembly.

Removing the Fan Assembly
To replace the fan sub-assembly:
1. Disconnect power from the Switch by turning off the on/off Switch
(Figure 3-8, item 1) and then removing the power cord (Figure 3-8,
item 2).
NOTE: The fan 3-wire power connectors are keyed. While removing the connector,
note its orientation on the motherboard mating connector for ease of re-installation.

3
4

14
12
10
8
6
4
2
0

2
SHR-1216A

Figure 3-8. Main Chassis Fans and Power Connections

2. Remove the four screws (Figure 3-8, item 3) at the rear of the Switch,
which secure the sub-assembly to the chassis rear panel.
3. Carefully lift the fan subassembly (Figure 3-8, item 5) up and away
from the motherboard and chassis rear panel until you can reach the two
power connectors on the motherboard.

3-14 StorageWorks Fibre Channel Storage Switch Service Guide

1
2

14
12

10
8
6
4
2
0

SHR-1217

Figure 3-9. Main Chassis Fans with Sub-assembly and Power Connections

4. Carefully unplug the two chassis fan power connectors (Figure 3-9, item
2) from the motherboard and lift the sub-assembly from the chassis,
then remove the failed fan.

Installing a Fan Assembly
NOTE: When reconnecting he fan power, ensure that the connection is properly oriented.
Do not force the connection.

To install a fan assembly:
1. Position the fan sub-assembly with enough space to connect both fan
power connectors to the motherboard.
2. Position the subassembly on the chassis rear panel over the screw holes.
3. Secure the subassembly to the chassis using four screws.
4. Carefully plug the two chassis fan power connectors (Figure 3-9, item 2
) into the motherboard.

Repair and Replacement 3-15

Replacing the Motherboard
CAUTION: The motherboard contains static sensitive components. Use ESD
precautions when handling the motherboard.

Removing the Motherboard
1. Remove the cover from the Switch, the GBICs from the interface cards ,
and then remove the interface cards.
2. Remove the CPU caard.
3. Remove the rear interface card mounting bracket.
4. Remove the fan assembly.
5. Disconnect the motherboard power connector (Figure 3-9, item 1).
6. Remove the screws securing the motherboard and carefully lift the
motherboard from the chassis.

Installing the Motherboard
Reverse the removal procedure to install a new motherboard.

Appendix

Glossary

Definition of Terms
Table A-1 contains terms relating to the Switch and Fibre Channel
connections.

Table A-1
Switch Terminology
Term

Definition

Alias Server

A Fabric software facility that supports
multicast group management.

Arbitrated Loop

The FC Arbitrated Loop (FC-AL) is a
standard defined on top of the FC-PH
standard. It defines the arbitration on a
loop where several FC nodes share a
common medium.
continued

A-2 StorageWorks Fibre Channel Storage Switch Service Guide

Table A-1
Switch Terminology continued
Community (SNMP)

An SNMP community is a relationship
between an SNMP agent and a set of
SNMP managers that defines
authentication, access control, and proxy
characteristics.

Credit

Credit, applied to a Switch, is a numeric
value that represents the maximum
number of receive buffers provided by an
F_Port or FL_Port to its attached N_Port or
NL_Port respectively such that the N_Port
or NL_Port may transmit frames without
over-running the F_Port or NL_Port.

Class 2

In Class-2 service, the Fabric and
destination N_Port provide connectionless
service with notification of delivery or
nondelivery between the two N_Ports.

Class 3

Class-3 service provides a connectionless
service without notification of delivery
between N_Ports. The transmission and
routing of Class-3 frames is the same as
for Class-2 frames.

Domain_ID

The domain number uniquely identifies the
Switch in a Fabric. This Switch domain ID
is normally automatically assigned by the
Switch and may be any value between 0
and 31. The default domain ID number
may also be assigned manually.
continued

Glossary A-3

Table A-1
Switch Terminology continued
E_Port

A port is designated an E_Port when it is
used as an interSwitch expansion port to
connect to the E_Port of another Switch to
build a larger Switch Fabric.

E_D_TOV (Error Detect Time Out Value)

E_D_TOV (Error-Detect Time-Out Value)
defines the time the Switch waits for an
expected response before declaring an
error condition. The error detect time out
value is adjustable in 1ms increments from
two seconds up to ten seconds.

Fabric

The name applied to a network resulting
from the interconnection of Switches and
devices comprised of high-speed fiber
connections. A Fabric is an active,
intelligent, interconnect capable of routing
frames using only the destination ID of the
frame.

Fibre

A generic term used to cover all
transmission media specified in the Fibre
Channel physical and signaling standard.

FL_Port

The FL_Port is the Fabric access port used
to connect NL_Ports to the Switch in a
loop configuration.

F_Port

The F_Port is the Fabric access port used
to connect an N_Port.

FSPF

Fibre-Channel shortest path first.

G_Port

A port is designated as a G_Port when it
has not assumed a specific function. A
G_Port is a generic Switch port that can
operate either as an E_Port or an F_Port. A
port is defined as a G_Port, for example,
when it is not connected or has not yet
assumed a specific function in the Fabric.
continued

A-4 StorageWorks Fibre Channel Storage Switch Service Guide

Table A-1
Switch Terminology continued
Interswitch Link (ISL)

ISL is a fiber link between two Switches

Loop

A loop is a configuration of devices (for
example, JBODs) connected to the Fabric
via and FL_Port interface card.

Multicast

Multicast is used when multiple copies of
data are to be sent to designated multiple
destinations.

N_Port

The N_Port is the designation of an
equipment port connected to the Fabric.

NL_Port

The NL_Port is the designation of an
equipment port connected to the Fabric in
a loop configuration via an FL_Port.

Power-on self-test (POST)

The POST is a series of self-tests which
run each time the unit is booted or reset.

R_A_TOV (Resource Allocation Time Out
Value)

R_A_TOV is used to time out operations
that depend on the maximum possible
time that a frame could be delayed in a
Fabric and still be delivered. The value of
R_A_TOV is adjustable in 1-microsecond
increments over a range from 10 to 120
seconds. Frames stored in the Switch and
not delivered with R_A_TOV are deleted.
continued

Glossary A-5

Table A-1
Switch Terminology continued
Isolated E_Port

ISL is online but not operational between
Switches because of overlapping domain
ID or nonidentical parameters such as
E_O_TOVs.

Simple Network Management Protocol
(SNMP)

SNMP is a TCP/IP protocol that generally
uses the User Datagram Protocol (UDP) to
exchange messages between a
management information base and a
management client residing on a network.
Since SNMP does not rely on the
underlying communication protocols, it
can be made available over other
protocols, such as UDP/IP.

SNMPv1

The original standard for SNMP is now
referred to as SNMPv1.

Trap (SNMP)

A trap is a mechanism for SNMP agents to
notify the SNMP management station of
significant events.

Unicast

Unicast routing provides one or more
optimal path(s) between any of two
Switches that make up the Fabric. This is
for a single copy of the data to be sent to
designated destinations.

Worldwide Name (WWN)

A WWN uniquely identifies a Switch on
local and global networks.

Appendix

Bootrom Diagnostics

Bootrom Memory Test
While the Bootrom Memory Test is active, the status LEDs on the CPU
board indicate which phase of the test is running. The power-on LED is
actually bit 0 of the CPU LEDs. For the information in Table B-1, the Poweron LED is ignored, making Bit 1 the lowest (bit 0), bit 2 is 1, and so on.

CPU Card
D2 (Bit 0 in
Table B-1)
Front Panel
Figure B-1. Location of Bootrom LEDs

B-2 StorageWorks Fibre Channel Storage Switch Service Guide

Table B-1
7-bit Assignments of the CPU LEDs
Bit
6

Bit
5

Bit
4

Bit
3

Bit
2

Bit
1

Bit
0

External

CPU Status

Bit 0, Hex 01, processor
writing memory

Bit 1 Hex 02, CPU reading
st
1 quarter of memory.

Connecto
r

Memory Test Error Indicators
A failure detected in the Power-On Self-Tests (POSTs) might not be
indicated on the front panel LEDs. But the LEDs on the CPU card locate and
indicate a failure.

Bootrom Diagnostics B-3

Memory Test Description
On the first pass of the memory test, all memory is written with a
checkerboard pattern of number 5(s) and letter A(s). For example, location 0
is written as:
0x5555555

location 1 is written as:
0xAAAAAAA

location 2 is written as:
0x5555555

and so on, until all memory locations are included in the test. The processor
reads each location and verifies the data.

Memory Test Pass Two
The second pass of the test begins writing the memory with the complement
of the data taken in the first pass. For example, location 0 acquires
0xAAAAAAA, location 1 acquires 0x5555555, and so on.

Memory Test Pass Three
Pass Three of the memory test writes a unique value to each location in
memory. Location 0 is written with 0x69782534. Each subsequent location is
written with a value of decimal 105 greater than the preceding location.
When writing is completed, the processor reads each location and verifies the
data.

Memory Test Pass Four
The final pass writes all memory with zeros in preparation for loading the
system image, and verifies that all locations are, in fact, zero.
The LED walks from bit positions 0 through 4 three times before positioning
5 and 6 light only once as each test completes.

B-4 StorageWorks Fibre Channel Storage Switch Service Guide

Error Conditions
The power-on LED flashes rapidly during a failure, but the CPU LEDs are
unaffected. A failure condition while bit 0 is active is not likely. Active
states on positions 1 through 4 indicate which quarter of memory generated a
failure.
A failed location is repeatedly and infinitely read and written - even in a case
where the data eventually matches – until power is removed. This condition
allows for scoping the bad signals. The failed location is written and read
16K times in each power-on cycle. The processor reads and writes the point
of failure at maximum speed.

Appendix

License Key Codes

When to Replace a License Key
A license key code is generated from the Switch World Wide Name (WWN),
which is stored in the individual CPU card. When a CPU card for a given
switch is replaced, the key code for the Switch is nullified, leaving Web
Tools, and Zoning, non- functional. To renew these features, the license key
code must be regenerated and entered into the switch to match the needed
features and the new CPU card WWN. To obtain a new license key call 1800-OK-COMPAQ or check the web at www.compaq.com. The support
representative will need the following information:
Switch WWN - from the switchShow output
Switch firmware version
Company name
Caller name
Phone number
Pager number - for a return call
Switch Serial Number
Version output.

C-2 StorageWorks Fibre Channel Storage Switch Service Guide

Installing a New Key Code
1. Start a Telnet session
2. From the session window type:
telnet>switch management

This opens a switch administration window. From the sw25admin> prompt:
sw25:admin> LicenseShow
9S9RzSebeATAS0k:
sw25:admin> WebLicense
web license number
sw25:admin>SESLicense
SES license number
Value = 7 = 0x7

If there is no license installed on the Compaq StorageWorks Fibre
Channel Switch:
CAUTION: A license for one Switch (World Wide Name) will not work with a
different (World Wide Name) Switch.
If an invalid license key is entered, the existing license (if any) is overwritten,
thus eliminating any/all valid license keys.

License Key Codes C-3

3. From the Telnet command line, type:
telnet> licenseAdd “key”

Where key is the license key string of alphanumeric characters in double
quotes (“key”) that is provided by Compaq Customer Service, and must be
entered exactly as given.
NOTE: The key is case sensitive.

For example:
licenseAdd “9S9RzSebeATAS0k”

When the license key is entered, check it with the licenseShow command. If
the output license information is presented as in Step 2, reboot the switch. If
not, repeat step 3 above.

Index

Front Panel, Removing 3-10

B
Bootrom Memory Test 2-2

C
Cascading 1-2
Compaq authorized reseller x
Compaq website x
CPU Card, Installing 3-8
Removing 3-7

D
diagnostics B-2
Diagnostics 2-1

G
GBIC module 1-11
Replacing 3-6
getting help ix

H
help
additional sources ix
Compaq website x
Compq authorized resellers,
telephone numbers x
technical support telephone
numbers ix
http://www.compaq.com x

E
embedded port 1-8
Error messages 2-12

F
Fan Assembly, Installing 3-14
Removing 3-13
Fibre Channel Fabric 1-1
field replaceable units 3-1
FL_Port card 1-11
Front Panel 2-3
Installing 3-11

I
icons
symbols on equipment viii
Initialization 2-5
Interface Card, Installing 3-6
Removing 3-4

M
Motherboard, Removing 3-15

2 StorageWorks Fibre Channel Storage Switch Service Guide

symbols on equipment viii

Performance 1-6
port failure 2-2
POST 2-6
Power Supply, Installing 3-13
Removing 3-11

T
technical features 1-3
technical support ix
telephone numbers x
text conventions vii

R
RJ-45 receptacle viii

S
Switch architecture 1-8
Switch Cover, Removing 3-3
Switch status 2-4
switching function 1-8
symbols in text vii

W
warnings
electrical shock viii
rack stability ix
www.compaq.com. x