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Document:	HUBwatch for Windows, DECbridge 90 Management
Order Number:	EK-488AA-UI
Revision:	A01
Pages:	38
Original Filename:

OCR Text

HUBwatch for Windows
DECbridge 90 Management
Order Number: EK–488AA–UI. A01

Revision/Update Information:

Digital Equipment Corporation
Maynard, Massachusetts

This is a new manual.

First edition, May 1993
The information in this document is subject to change without notice and should not be construed
as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no
responsibility for any errors that may appear in this document.
The software described in this document is furnished under a license and may be used or copied
only in accordance with the terms of such license.
No responsibility is assumed for the use or reliability of software on equipment that is not supplied
by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to restrictions
as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software
clause at DFARS 252.227-7013.
© Digital Equipment Corporation 1993.
DEC, DECbridge, DECconnect, DECdirect, DEChub, DECmcc, DECnet, DECserver, Digital,
EtherWORKS, HUBwatch, LAT, MicroVAX, PATHWORKS, ThinWire, UNIBUS, VAX, VMS, and the
DIGITAL logo are trademarks of Digital Equipment Corporation.
IBM is a registered trademark of International Business Machines Corporation.
Microsoft and MS–DOS are registered trademarks and Windows is a trademark of Microsoft
Corporation.
NetWare and Novell are registered trademarks of Novell, Inc.
3Com is a registered trademark of 3Com Corporation.
VINES is a registered trademark of Banyan Systems, Inc.
Adobe and PostScript are registered trademarks of Adobe Systems, Inc.
All other trademarks and registered trademarks are the property of their respective holders.

This document was prepared using VAX DOCUMENT, Version 2.1.

Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Managing DECbridge 90 Modules
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the DECbridge Module . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessing DECbridge Information . . . . . . . . . . . . . . . . . . . . . . . . .
Managing the DECbridge Configuration . . . . . . . . . . . . . . . . .
DECbridge Configuration Reports . . . . . . . . . . . . . . . . . . .
Managing the Bridge’s Protocol Filtering . . . . . . . . . . . . . . . . .
Adding a Bridge Protocol Filter . . . . . . . . . . . . . . . . . . . . .
Modifying a Selected Protocol . . . . . . . . . . . . . . . . . . . . . .
Changing a Protocol Filter . . . . . . . . . . . . . . . . . . . . . . . . .
Deleting a Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Managing DECbridge Performance . . . . . . . . . . . . . . . . . . . . .
DECbridge Performance Reports . . . . . . . . . . . . . . . . . . . .
Managing DECbridge Faults . . . . . . . . . . . . . . . . . . . . . . . . . .
Viewing DECbridge Error Report . . . . . . . . . . . . . . . . . . . .
Setting Thresholds - DECbridge . . . . . . . . . . . . . . . . . . . . .
Accessing the MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Printing DECbridge Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1
1–1
1–3
1–3
1–4
1–15
1–15
1–17
1–19
1–19
1–20
1–20
1–21
1–22
1–24
1–24
1–26

A Documentation and Ordering
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A–1
A–1
A–2

iii

Index
Figures
1–1
1–2
1–3
1–4
1–5
1–6
1–7
1–8
1–9
1–10
1–11
1–12

Selecting a DECbridge Module . . . . . . . . . . . . . . . . . . .
Bridge Information Report . . . . . . . . . . . . . . . . . . . . . .
Bridge Ports Report . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bridge Port Information Report . . . . . . . . . . . . . . . . . .
Bridge Forwarding Report . . . . . . . . . . . . . . . . . . . . . .
Bridge Spanning Tree Report . . . . . . . . . . . . . . . . . . . .
DECbridge 90 Filter Selection . . . . . . . . . . . . . . . . . . .
Select Protocol Window . . . . . . . . . . . . . . . . . . . . . . . .
DECbridge Performance Report . . . . . . . . . . . . . . . . . .
DECbridge Error Report . . . . . . . . . . . . . . . . . . . . . . .
Set Thresholds - Bridge Window . . . . . . . . . . . . . . . . .
Output Dialog Box . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2
1–6
1–8
1–9
1–11
1–14
1–17
1–18
1–21
1–23
1–25
1–26

Preface
Introduction
This manual is for system managers who are going to use the HUBwatch for
Windows application to manage DECbridge 90 modules.
This manual contains information about selecting a bridge module; managing the
configuration, performance, and faults for the bridge; and printing bridge reports.

Conventions
The following table lists the conventions used in this manual.
Convention

Meaning

Note

Contains important information.

Italic type

Emphasizes important information, indicates variables, and
indicates complete titles of documents.

Click on

To press and release a mouse button when the pointer is
positioned on an active object.

Drag

To press and hold a mouse button, move the mouse, and then
release the button.

Indicates a mouse button.
Mouse Button

Position

MB1

Left mouse button

MB2

Right mouse button (middle button on
3-button mouse)

Convention

Meaning

Underline

Indicates the underlined letter on the screen menu item,
option, or button. These are designed for use if you do not
have a mouse or do not want to use your mouse for accessing
menu items. To access items without using a mouse, do the
following:

To . . .

Press . . .

Access menu items

Alt and the underlined letter

Access options

Shift and the underlined letter

Activate buttons

Alt and the underlined letter

1
Managing DECbridge 90 Modules
Introduction
The DECbridge 90 is a network LAN bridge designed for Institute of Electrical
and Electronics Engineers (IEEE) 802.3 CSMA/CD networks. The DECagent 90
proxies for the DECbridge 90 by translating SNMP to Digital’s RBMS protocol.
You can use HUBwatch to manage, via the DECagent 90, the configuration
performance and faults related to a selected DECbridge.
Note
Prior to reading this manual, you should be familiar with the
DECbridge 90 Owner’s Manual, EK–DEWGB–OM. For ordering
information, refer to Appendix A.

Selecting the DECbridge Module
To manage a specific DECbridge, you must define that bridge by selecting it:
1. Set the display to the hub view, to select a DECbridge.
or
Set the display to the network or site view to select a standalone DECbridge.
2. Choose the Navigation pull-down menu.
3. Choose the Zoom In option.
The cursor becomes a magnifying glass.
4. Position the magnifying glass on the DECbridge and click MB1.

Managing DECbridge 90 Modules 1–1

HUBwatch displays the module view with the DECbridge module on the left
side of your window (Figure 1–1).
Note
You can also access the bridge module by double clicking MB1 on the
module itself.

Figure 1–1 Selecting a DECbridge Module

LJ-02747-SIX

Note
For managing and information gathering purposes, the DECbridge 90FL
should be treated the same as the standard DECbridge 90.
To select a generic bridge, refer to the HUBwatch for Windows User
Information manual.

1–2 Managing DECbridge 90 Modules

Accessing DECbridge Information
You can access DECbridge information and manage the selected bridge through
the following pull-down menus:
•

Configuration

•

Performance

•

Fault

•

MIB Access
Note
The MIB Access menu is available only at the device view. It is not
available at the module view.

Managing the DECbridge Configuration
You can manage the configuration of either a DECbridge at the module view
or a standalone DECbridge at the device view. The following table lists the
options that appear at either the module or the device view when you select the
Configuration menu. It also lists the tasks you can perform using these options.
Option

View

Task

Report

Module

View DECbridge configuration reports.

Protocol Filter

Module

Add, modify, or delete a protocol filter.

Modify†

Device

Modify the selected device.

Note†

Module and
Device

Enables you to make an annotation about the
selected device.

†This option is not module specific. For further information, refer to the HUBwatch for Windows User
Information manual.

Managing DECbridge 90 Modules 1–3

DECbridge Configuration Reports
Through the Configuration menu, at the module view, you can access information
about the configuration of the selected DECbridge. The configuration reports
include the following:
•

Bridge Information

•

Bridge Ports

•

Bridge Port Information

•

Bridge Forwarding

•

Bridge Spanning Tree

Bridge Information Report
The Bridge Information Report (Figure 1–2) is accessed from the Bridge Info
option. It displays the following high-level configuration information for the
selected bridge. You can change any of the fields displayed in bold type.
Field Name
MIB Object

Description

Bridge Name
dh90SlotModuleName

A user-assigned name for the selected bridge. It can
be up to 16 alphanumeric characters in length.

NVRAM Self Test
dbSysNvramFailed

Reports whether the self-test of the NVRAM passed
successfully.

MAC Address
dh90SlotPhysicalAddress

The Medium Access Control (MAC) address for the
selected bridge. This address is often referred to as
the Ethernet or the Physical address.

SNMP Agent
dh90SlotModuleName

The user-assigned name for the DECagent 90 that is
proxying for this bridge. The bridge must be in the
slot table of one of the communities that the agent is
supporting.

Hardware/Software Ver
dh90SlotModuleVersion

A textual description of the hardware and the
firmware of the bridge.

Mgt Port
db90MgmtHeardPort

The bridge port where the management packet was
heard.

Oper Status
db90SlotModuleVersion

The operating status of the selected bridge.

1–4 Managing DECbridge 90 Modules

Field Name
MIB Object

Description

Up Time (hr)
dh90SlotCounterTime

The time in hours since the bridge’s counters were last
zeroed.
Modify

Being Polled
No MIB Object

Controls whether the management station is polling
this agent. For a given hub, you either poll all modules
or no modules.

Reset
db90Maintenance

If selected, causes the agent to cease existing
operations and perform its self test. If the self test
passes, the agent is ready to accept new SNMP
packets. The agent’s counters are cleared by this
action, but no previously scored MIB objects are
affected.

Set to Factory Defaults
da90Maintenance

Causes the bridge to go through its power up self test.
When this happens, all settings stored in NVRAM are
lost and the learned entries in the forwarding table
are erased.

When you are finished viewing the information and making the necessary
changes, choose the Apply button to accept the changes or choose the OK button
to accept the changes and remove the window.

Managing DECbridge 90 Modules 1–5

Figure 1–2 Bridge Information Report

LJ-02728-SIX

1–6 Managing DECbridge 90 Modules

Bridge Ports Report
The Bridge Ports report (Figure 1–3) is accessed through the Bridge Ports option.
It displays the following high-level port information for each of the ports on the
selected bridge. You can change any of the fields in bold type.
Field Name
MIB Object

Description

Root Bridge
dot1dStpDesignatedRoot

The MAC address of the root bridge as calculated by
the Spanning Tree algorithm.

Lowest Cost Port
dot1dStpRootPort

The port on this bridge that is closer to the root as
determined by the Spanning Tree algorithm. For the
DECbridge 90, this should always be port 1 on the
backbone side.
Fields for Each Port

Enable
ifAdminStatus

A check in the box causes the port to be operational
provided there are no faults detected on the port.

MAC Address
ifPhysicalAddress

The Medium Access Control (MAC) address for the
port. This is often referred to as the physical or
Ethernet address.

Oper Status
ifOperStatus

The operating status for the port.

Priority
dot1dStpPort

You can change the priority value for this bridge in the
Spanning Tree calculation. However, the change will
not affect the resulting Spanning Tree, since there are
no other bridges on the workgroup side.

Destination Bridge
dot1dStpPort

The MAC address of the bridge that the Spanning
Tree calculation designated as the active bridge for
the segment to which this port is attached. It matches
the MAC address of this port if this is the designated
bridge on the backbone segment. On the workgroup
side, port 2, the designated bridge is always this
bridge.

Bad Hello Count
db90IfSpBadHelloCount

A count of the number of Hello intervals during which
at least one faulty Spanning Tree hello has been heard
from another bridge on this port.

Forward Delay Timer (sec)
db90IfSpForwardDelayTimer

The time remaining before the bridge leaves the
learning state of Preforwarding and enters the
operational state of Forwarding.

Root Age (sec)
db90IfSpRootAge

The elapsed time since a Hello was heard from the
designated bridge on this port.

Managing DECbridge 90 Modules 1–7

When you are finished viewing the information and making the necessary
changes, choose the Apply button to accept the changes or choose the OK button
to accept the changes and remove the window.
Figure 1–3 Bridge Ports Report

LJ-02729-SIX.PS

1–8 Managing DECbridge 90 Modules

Bridge Port Information Report
The Bridge Port Information report (Figure 1–4) is accessed through the Bridge
Port Info option. The report displays the following interactive port information
on the number of frames received, discarded, and sent for both the backbone side
of the bridge and the workgroup side. This report is only for viewing; the fields
cannot be changed.
Field Name
MIB Object

Description

Received
dot1dTpPortInFrames

The number of frames received by the backbone and the
workgroup.

Discarded
dot1dTpPortInDiscards

The number of frames discarded by the backbone and the
workgroup.

Sent
dot1dTpPortOutFrames

The number of frames sent to its destination by both the
backbone and the workgroup.

Figure 1–4 Bridge Port Information Report

LJ-02730-SIX.PS

Managing DECbridge 90 Modules 1–9

Bridge Forwarding Report
The Bridge Forwarding report (Figure 1–5) is accessed through the Bridge
Forwarding option. It provides the following information for the bridge. You can
change any of the fields in bold type.
Field Name
MIB Object

Description
Information

Aging Time (sec)
dot1dTpAgingTime

The amount of time (in seconds) that the bridge
holds an address in its database if it does not
receive any activity from that address.

Max. Forwarding Entries
db90MaxForwardingDBEntries

The maximum number of forwarding addresses
the bridge can hold at one time. If the maximum
number is exceeded, HUBwatch displays an alarm
for the bridge.

Max NV Forwarding Entries
db90MaxNVForwardingDBEntries

The maximum number of entries put in a nonvolatile area.
Workgroup

MAC Address
dot1dTpFdbTable

A list of all MAC addresses in the DECbridge 90’s
forwarding table. The DECbridge 90 learns the
addresses for the workgroup side only (port 2).
There can be up to 200 entries in the table.

Repeater Slot/Port
dot1dTpFdbTable

An association is made between repeater ports and
the MAC address of devices attached to those ports,
when possible. The slot and the port information
will only appear when the DECbridge 90 is
installed in a hub with DECrepeaters. Since
the slot/port information is associated only
with repeater ports, there will be no slot/port
information given when the MAC address belongs
to the Terminal Server or other module occupying
another slot in the hub. The slot/port number
given is arrived at by multiplying 100 times the
slot number and adding the port number. Thus,
101 represents slot 1, port 1, and 507 would be slot
5, port 7.

Change the Aging Time (sec), if necessary, then choose the Apply button to
accept the change or choose the OK button to accept the change and remove the
window.

1–10 Managing DECbridge 90 Modules

Figure 1–5 Bridge Forwarding Report

LJ-02731-SIX.PS

Managing DECbridge 90 Modules 1–11

Bridge Spanning Tree Report
The Bridge Spanning Tree report (Figure 1–6) is accessed through the Bridge
Spanningtree option. It displays the most commonly needed information related
to the Spanning Tree protocol. You can change any of the fields in bold type.
Field Name
MIB Object

Description
Spanning Tree Mode

Compatibility
db90LB100SpanningTreeCompat

Displays either 1 for autoselect or 2 for ieee802.
If autoselect, the bridge switches to LB100 mode
if a Hello is heard from an LB100. If ieee802,
the bridge stays in that mode even if an LB100 is
detected.

Mode Changes
db90SpanningTreeModeChanges

The number of times this bridge has switched from
ieee802 mode to LB100 mode or vice versa.

LB100 Version
db90LB100SpanningTreeVer

The version number of the Spanning Tree
algorithm used when the bridge is in the LB100
Spanning Tree mode.

802 Version
db90802SpanningTreeVer

The version number of the Spanning Tree
algorithm used when this bridge is in the ieee802
Spanning Tree mode.
LB100 Polling

Currently Changing
db90TopologyChangFlag

This displays 1 if the extended LAN is presently
changing to a new Spanning Tree topology or 2 if it
is not changing.

Time Since Last Change (hr)
dot1dStpTimeSinceTopologyChange

Elapsed time since a topology change was last
detected by this bridge.

Number of Changes
dot1dStpTopChanges

Total number of topology changes detected by this
bridge since it was last reset.

Tell Parent
db90TellParentFlag

A flag that indicates if the bridge is attempting to
propagate a topology change toward the root.

1–12 Managing DECbridge 90 Modules

Field Name
MIB Object

Description
Hello

Last Hello (hrs:sec)
db90TimeSinceLastHello

The number of seconds since this bridge last sent a
Spanning Tree Hello message.

Bad Limit
db90BadHelloLimit

The number of Hello intervals during which this
bridge receives one or more bad Hellos on one of its
ports. This happens before this bridge performs a
test on the link.

Reset Timer
db90BadHelloResetTimer

The number of Hello intervals without bad Hellos
that the bridge will wait for before it resets its bad
Hello count to zero.
Aging

Time (sec)
db90ForwardDBShortAgingTime

The number of seconds that this bridge will keep
learned entries active while a topology change is in
effect.

Best Root Age (hrs:sec)
db90BestRootAge

The elapsed time since the Hello message was
received that established the best root.

Change the Reset Timer field, if necessary, then choose the Apply button to
accept the change or choose the OK button to accept the change and remove the
window.

Managing DECbridge 90 Modules 1–13

Figure 1–6 Bridge Spanning Tree Report

LJ-02732-SIX.PS

1–14 Managing DECbridge 90 Modules

Managing the Bridge’s Protocol Filtering
From the Configuration menu, at the module view, you can also effect the
following four protocols of a selected DECbridge:
•

Add protocols

•

Modify a protocol ID or name

•

Change a protocol filter

•

Delete a protocol

Adding a Bridge Protocol Filter
To add a protocol filter to a selected bridge, do the following:
1. Choose the Protocol Filter option from the Configuration menu.
The DECbridge 90 Filter Selection window appears (Figure 1–7). It lists the
following for each of the existing filters:
Field Name
MIB Object

Description

Protocol No
No MIB Object

The entry number in the protocol filter table. It is
used for reference only. A maximum of 16 entries
are allowed on the DECbridge 90.

Protocol Name
No MIB Object

A character string that is normally used to refer
to this instance of the protocol type.

Protocol Type
db90ProtoFilterPortMask
db90ProtoFilterMulticastFlag
db90ProtoFilterStatus

The Ethernet or 802 type for the protocol.

Multicast Wrkgrp Backbone
db90ProtoFilterPortMask
db90ProtoFilterMulticastFlag
db90ProtoFilterStatus

Determines the action of the DECbridge 90 upon
receiving a Multicast packet on the workgroup
side. The possible actions are filter (block) or
forward. If the arrow passes through the barrier,
then Multicast packets with this protocol type are
forwarded. If the point of the arrow touches the
barrier, then Multicast packets with this protocol
type are not forwarded. Choosing the Modify
button brings up a screen where you can change
the filtering operations on this protocol type.

Managing DECbridge 90 Modules 1–15

Field Name
MIB Object

Description

Multicast Backbone
db90ProtoFilterPortMask
db90ProtoFilterMulticastFlag
db90ProtoFilterStatus

Determines the action of the DECbridge 90 upon
receiving a Multicast packet on the backbone
side. If the arrow passes through the barrier,
then Multicast packets with this protocol type are
forwarded. If the point of the arrow touches the
barrier, then Multicast packets with this protocol
type are not forwarded to the backbone side.
Choosing the Modify button brings up a screen
where you can change the filtering operations on
this protocol type.

Unicast Wrkgrp Backbone
db90ProtoFilterPortMask
db90ProtoFilterMulticastFlag
db90ProtoFilterStatus

Determines the action of the DECbridge 90 upon
receiving a unicast packet on the workgroup
side. The possible actions are filter (block) or
forward. If the arrow passes through the barrier,
then unicast packets with this protocol type are
forwarded. If the point of the arrow touches the
barrier, then unicast packets with this protocol
type are not forwarded. Choosing the Modify
button brings up a screen where you can change
the filtering operations on this protocol type.

Unicast Backbone Backbone
db90ProtoFilterPortMask
db90ProtoFilterMulticastFlag
db90ProtoFilterStatus

Determines the action of the DECbridge 90 upon
receiving a unicast packet on the backbone
side. The possible actions are filter (block) or
forward. If the arrow passes through the barrier,
then unicast packets with this protocol type are
forwarded. If the point of the arrow touches the
barrier, then unicast packets with this protocol
type are not forwarded to the backbone side.
Choosing the Modify button brings up a screen
where you can change the filtering operations on
this protocol type.

2. Select the lowest unused row to enter the protocol.
The row is highlighted.
3. Choose the Protocol button.
The Select Protocol window appears, listing many common protocols.
4. Scroll through the listing until you find the protocol you need.
5. Select the protocol and choose the OK button.
The selected protocol appears in the selected row.

1–16 Managing DECbridge 90 Modules

Figure 1–7 DECbridge 90 Filter Selection

LJ-02749-SIX

Modifying a Selected Protocol
To modify an existing protocol for the bridge, do the following:
1. Choose the Protocol Filter option from the Configuration menu.
The DECbridge 90 Filter Selection window appears (Figure 1–8). It shows the
existing protocols for the selected bridge.
2. Select the protocol you want to change and choose the Protocol button.
The Select Protocol window appears with the selected protocol highlighted.
3. Choose the Modify button.
The Replace Protocol window appears with the present Protocol ID and the
name for the selected protocol.
4. Change the Protocol ID and the Protocol name as needed and choose the OK
button.

Managing DECbridge 90 Modules 1–17

The protocol changes are made only to the selected protocol.
Note
If the protocol you changed is also listed on the DECbridge 90 Filter
Selection window, you have to go into this window and make the changes
manually. To make a change, highlight the filter you want to change by
choosing the newly changed protocol to replace that filter.

Figure 1–8 Select Protocol Window

LJ-02909-SIX

1–18 Managing DECbridge 90 Modules

Changing a Protocol Filter
To modify the filter of an existing entry, do the following:
1. Choose the Protocol Filter option from the Configuration menu.
The DECbridge 90 Filter Selection window appears.
2. Select the protocol for which you want to change the filtering.
3. Repeatedly click MB1 on the Filter button until the filtering information for
both Multicast and unicast appears as necessary.
Deleting a Protocol
To delete a protocol from the DECbridge 90 Filter Selection window, do the
following:
1. Choose the Protocol Filter option from the Configuration menu.
The DECbridge 90 Filter Selection window appears.
2. Highlight the protocol you want to delete.
3. Click MB1 on the Delete button.
Note
If you choose the Cancel button on the DECbridge 90 Filter Selection
window, all the protocols will be deleted.

Managing DECbridge 90 Modules 1–19

Managing DECbridge Performance
You can manage the performance for either a DECbridge at the module view
or a standalone DECbridge at the device view. The following table lists the
options that appear at either the module or the device view when you select the
Performance menu. It also lists the tasks you can perform using these options.
Option

View

Task

Statistics

Module

View DECbridge performance reports.

Graph†

Module and
Device

Display an interactive graph of the overtime count
for a selected MIB node and object.

Ping†

Device

Test the IP level connectivity of selected devices.

†This option is not module specific. For further information, refer to the HUBwatch for Windows User
Information manual.

DECbridge Performance Reports
Through the Performance menu, at the module view, you can access information
about the performance of the selected DECbridge. The performance reports for
the bridge include the following:
•

DECbridge Performance

•

MIB Object Graph

DECbridge Performance Report
The DECbridge Performance Report (Figure 1–9) displays MIB information about
the selected bridge. For detailed information on each of the MIB objects, refer to
the MIB Appendix in the HUBwatch for Windows User Information manual.
You can only view or print the information on the DECbridge Performance report.
For information on printing reports, see Printing DECbridge Reports.
MIB Object Graph Report - Bridge
The MIB Object Graph Report displays an interactive graph of the overtime
count for a selected MIB node and object. The report is accessed through the
Graph option. For further information, refer to the HUBwatch for Windows User
Information manual.

1–20 Managing DECbridge 90 Modules

Figure 1–9 DECbridge Performance Report

LJ-02733-SIX

Managing DECbridge Faults
You can manage the faults for either a DECbridge at the module view or a
standalone DECbridge at the device view. The following table lists the options
that appear at either the module or the device view when you select the Fault
menu. It also lists the tasks you can perform using these options.

Managing DECbridge 90 Modules 1–21

Option

View

Task

Error Statistics

Module

Look at the DECbridge Error Reports.

Set Thresholds

Module

Set threshold counters for the selected module.

Audible
Alarms†

Module and
Device

Set alarms so they are audible or inaudible.

Alarms†

Module and
Device

Access the Current Alarms Network report.

Report†

Module and
Device

Access the Alarm Log.

†This option is not module specific. For further information, refer to the HUBwatch for Windows User
Information manual.

Viewing DECbridge Error Report
The DECbridge error report lists specific MIB objects for the selected bridge and
the associated errors. To access the report, do the following:
1. Set the view to the bridge you need to effect.
2. Pull down the Fault menu.
3. Choose the Error Statistics option.
The DECbridge error report appears (Figure 1–10).

1–22 Managing DECbridge 90 Modules

Figure 1–10 DECbridge Error Report

LJ-02734-SIX

The DECbridge error report is comprised of information for Interface 1 and
Interface 2. Both contain the same entries. Interface 1 is for the backbone side of
the bridge. Interface 2 is for the workgroup side of the bridge.
You can either view or print the DECbridge error report. You cannot change
any of the fields. For detailed information on each of the MIBs displayed in the
DECbridge error report, refer to the MIB Descriptions appendix in the HUBwatch
for Windows User Information manual. To print the report, refer to Printing
DECbridge Reports.

Managing DECbridge 90 Modules 1–23

Setting Thresholds - DECbridge
The Set Thresholds - Bridge window displays the thresholds for either Interface 1
or Interface 2 of the selected bridge.
To access the Set Thresholds - Bridge window, do the following:
1. Select the bridge for which you want to view the threshold settings.
2. Choose the Set Threshold option from the Fault menu.
A submenu appears with the following options appears:
•

Interface 1

•

Interface 2

3. Select whichever one you need to effect.
The Set Thresholds window for the selected bridge appears (Figure 1–11).
You can do any of the following to the threshold counters for the selected
bridge.
To perform this task . . .

Do this... . . .

Set the thresholds to their
default.

Choose the Set Default button.

Disable all the threshold
counters.

Choose the Disable All button.

Enable all the threshold
counters.

Choose the Enable All button.

Restore the threshold counters
to their original setting.

Choose the Restore button.

Change specific threshold
counter limits.

Choose

for the setting you need to change.

4. Make the necessary changes to the threshold counters and choose the OK
button to accept the changes and remove the window.

Accessing the MIB
The MIB Access menu is not module specific. You can only access the MIB for a
generic or standalone device at the device view. For a DEChub module, you must
be at the hub view. For further information, refer to the HUBwatch for Windows
User Information manual.

1–24 Managing DECbridge 90 Modules

Figure 1–11 Set Thresholds - Bridge Window

LJ-02748-SIX

Managing DECbridge 90 Modules 1–25

Printing DECbridge Reports
Several of the report windows provide an option for printing the report. This is
indicated by an Output button at the bottom of the window.
To print a report, do the following:
1. Choose the Output button.
The Output dialog box appears (Figure 1–12).
2. Choose one of the following options for output:
Printer
File, Text
File, Delimited ASCII
3. Choose the OK button.
Figure 1–12 Output Dialog Box

LJ-02910-SIX

1–26 Managing DECbridge 90 Modules

A
Documentation and Ordering
Introduction
This appendix lists documentation that is related to the HUBwatch for Windows
application. It also includes ordering information.

Related Documentation
You can order the following documents from Digital:
Document Title

Order Number

DEChub 90 Owner’s Manual

EK–DEHUB–OM

Open DECconnect Building Wiring Components and
Application Catalog

EB–K2407–42

DECconnect System Planning and Configuration Guide

EK–DECSY–CG

DECagent 90 User Information

EK–DENMA–UI

DECbridge 90 Owner’s Manual

EK–DEWGB–OM

DECrepeater 90C Owner’s Manual

EK–DECMR–OM

DECrepeater 90T Owner’s Manual

EK–DETMR–OM

DECserver 90L Owner’s Manual

EK–DSRVD–OM

DECserver 90L+ Owner’s Manual

EK–DSRVG–OM

HUBwatch Installation & Use for DECmcc

AA–PW4BA–TE

HUBwatch for Windows (Kit)

EK–478AA–DK

HUBwatch for Windows User Information

EK–487AA–UI

HUBwatch for Windows DECserver 90 Management

EK–489AA–UI

HUBwatch for Windows DECrepeater 90 Management

EK–490AA–UI

Documentation and Ordering A–1

Ordering Information
You can order options and documentation by mail, phone, or electronically.
Need Help?
If you need help deciding which documentation best meets your needs, please call
800–DIGITAL (800–344–4825) and press 2 for technical assistance.
Electronic Orders
To place an order through your account at the Electronic Store, dial 800–234–1998,
using a modem set to 2400 or 9600 baud. You must use a VT terminal or terminal
emulator set at 8 bits, no parity. If you need help, call 800–DIGITAL (800–344–
4825) and ask for an Electronic Store specialist.
Telephone or Direct Mail Orders
You can order documentation by phone or direct mail.
If You Are
From . . .

Call . . .

Or Write . . .

U.S.A.

DECdirect
Phone: 800–DIGITAL
(800–344–4825)
FAX: (603) 884–5597

Digital Equipment Corporation
P.O. Box CS2008
Nashua, NH 03061

Puerto Rico

Phone: (809) 781–0505
FAX: (809) 749–8377

Digital Equipment Caribbean, Inc.
3 Digital Plaza, 1st Street
Suite 200
Metro Office Park
San Juan, Puerto Rico 00920

Canada

Phone: 800–267–6215
FAX: (613) 592–1946

Digital Equipment of Canada Ltd.
100 Herzberg Road
Kanata, Ontario, Canada K2K 2A6
Attn: DECdirect Sales

International

—

Local Digital subsidiary or approved
distributor

A–2 Documentation and Ordering

Digital Personnel
You can order documentation by electronic mail. Contact the following
organizations for instructions:
If You Need . . .

Call . . .

Contact . . .

Software
documentation1

DTN: 241–3023
(508) 874–3023

Software Supply Business
Digital Equipment Corporation
1 Digital Drive
Westminster, MA 01473

Hardware
documentation

DTN: 234–4325
(508) 351–4325
FAX: (508) 351–4467

Publishing & Circulation Services
Digital Equipment Corporation
NRO2-2/I5
444 Whitney Street
Northboro, MA 01532

1 Call to request an Internal Software Order Form (EN–01740–07).

Documentation and Ordering A–3

Index
B
Bridge
accessing information, 1–3
managing the configuration, 1–3
managing the faults, 1–21
managing the performance, 1–20
Bridge Information report, 1–4

C
Conventions
manual, v

D
DECbridge
managing the configuration, 1–3
managing the faults, 1–21
managing the performance, 1–20
DECbridge 90
accessing information, 1–3
managing, 1–1
DECbridge Error report, 1–22
DECbridge Performance report, 1–20
Documentation, A–1
ordering, A–2

MIB
accessing, 1–24
MIB Object Graph report - bridge, 1–20

O
Options
ordering, A–2
Ordering information
documentation, A–1

P
Protocols
adding a bridge protocol filter, 1–15
managing the bridge’s, 1–15
modifying, 1–17

R
Reports
bridge information, 1–4
DECbridge Error, 1–22
DECbridge Performance, 1–20
MIB Object Graph - Bridge, 1–20

T
Thresholds
setting, 1–24

Managing
bridge’s faults, 1–21
bridge’s performance, 1–20
DECbridge 90 modules, 1–1

Index–1