Digital PDFs

AE-D427B-TC

May 1978

4 pages

Original

0.3MB

Document:	10.73.02 7808 DECnetE
Order Number:	AE-D427B-TC
Revision:
Pages:	4
Original Filename:	http://bitsavers.org/pdf/dec/spd/10.73.02_7808_DECnetE.pdf

OCR Text

momoomo

Software Product Description
PRODUCT NAME: DECnet/E, Version 1.0
DESCRIPTION:
DECnetlE allows a suitably configured RSTS/E system to participate as a Phase II .DECnet node in pointto-point computer networks. DECnetlE is a Phase II
network product and is warranted for use only with
Phase II DECnet products supplied by DIGITAL.
DECnetlE offers task-to-task communications and
netwo'rk file transfer capabilities using the DIGITAL
Network Architecture protocols. DECnet/E communicates with adjacent nodes OV'1!" synchronous communication lines interfaced with DMC11 microprogrammed controllers.
DECnetlE functions are available to RSTS/E user
programs written in BASIC-PLUS and BASIC-PLUS-2.
The network fu nctions available to a DECnetlE user
depends, in part, on the configuration of the rest of
the network. Each DECnet product offers its own
functions and its own set of features to the user. Networks consisting entirely of DECnetlE nodes have all
the functions described in this SPD. Networks that
mix DECnetlEi:0des with other DECnet products may
limit the functi ns available to the DECnetlE user because some 0 CnetlE features may not be supported
by all DEC net products.
The Phase II products and functions available to
users on mixed networks can be determined by comparison of the SPD's for the appropriate products.
The DECnet Phase II Products SPD (10.78) contains a
description of DEC net functions and it identifies the
common functions available with mixed networks.

Task-to- Task Communication
Using DECnetlE, a RSTS/E user program written in
BASIC-PLUS or BASIC-PLUS-2 can exchange messages with other user programs using DNA protocols.
The two user programs can be on the same or adjacent DEC net nodes. (Adjacent nodes control opposite
ends of a point-to-point communication line.) If on
adjacent nodes, the second node can be any Phase II
DECnet System that supports synchronous communication lines.
The DECnet messages sent and received by the two
user programs can be in any data format. Each
message segment can be up to 512 bytes long (less if
limited by capabilities of the communication line or
the remote DECnet node).

Network File Transfer Utilities
Using DECnet/E utilities, a user can transfer sequen-

August 1978

SPD 10.73.2

tial ASCII files between Phase II DEC net nodes.
RSTS/E RMS-11 files can be transferred in both
directions between RSTS/E and an adjacent DECnet
node.
The DECnet/E file transfer utilities support all RSTS/E
RMS-11 supported devices and file formats. They do
not, however, support D08-11 or 'stream-ASCII magtapes.
Other types of files can be transferred where formats
between the Phase II DECnet nodes are compatible.
Between two DECnetlE systems, for instance, any
RSTS/E RMS-11 file can be copied with file attributes
preserved.
Additional facilities allow batch command files to be
submitted to a remote node. The list of commands
must be in the format expected by the node responsible for the execution. DECnetlE also allows batch
files to be received from other systems and executed.
DECnetlE does not support network file spooling.
Users can request only one file transfer at a time, and
only single files can be transferred with each command. Wild carding is not permitted, nor are directory
listing commands implemented.
Three-point file transfers are also possible if the
source and destination node are both adjacent to the
DECnetlE node from which the command is given.

Media Copy Utility
A NETCPY utility is provided which uses network
communications to copy RK05 disks,. floppies, DECtapes, and magtapes from one DECnetlE node to
another DECnetlE node. The user's node must be either the source or destination node for the copy. The
copy must be done without breaks and between like
peripherals. NETCPY is similar to the RSTS/E copy
utility in operation and capability. The entire media is
copied and copy operations are non-file structured.
NETCPY does not provide recovery from bad blocks
and is not intended for copying RK06 or larger disks.
Terminal Communication Utility
The DECnetlE TLK utility allows a user at a DECnetlE
node to send messages to adjacent DECnet nodes
that support the same feature. Messages can be
directed to a specific terminal or to the operator's
console at the destination node. TLK dialog mode allows users on the two systems to type messages to
one another.

AE-D427B-TC

DECnet/E, Version 1.0

SPD 10.73.2

·2·
Network Information Program

• size and distribution of network messages

Using the DECnet/E NIP utility, a user can display the
status of DEC net activity at the local node. A complete NIP report gives information about local programs using the network, the logical links in use, and
the status of adjacent network nodes. Output can be
dire.cted to the terminal or to a report file.

The maximum number of DMCll lines that can be
connected to a single DECnetiE node can be determined from the following table. The aggregate line
speeds shown are burst rates that can be achieved
during buffered data transfers. Sustained rates to
transfer user data will be less than the rates shown
because of network protocol overhead and other factors listed above. At higher speeds, message processing time will limit total throughput.

Network Control Utility
Using the DECnetiE NCP utility, the local console operator can perform many network configuration and
maintenance functions. The operator can maintain
node data bases and line assignments. Individual
DMCll lines can be put into loopback modes for diagnostic testing. Programs can be defined for automatic job startup whenever network connections
are requested to them. Individual logical links can be
aborted when neGessary.
Communications
DECnet/E uses DMCll communication controllers to
interface with other network nodes. The DMCll is a
DMA UNIBUS peripheral that implements line control
and error recovery procedures in microcode. The
DMCll uses DIGITAL Data Communications Message
Protocol (DDCMP) to provide full- or half-duplex
communication over point-to-point synchronous lines.
DECnetlE Operation
DECnet/E is implemented as an extension to the
RSTS/E executive and large message Send/Receive
facility. Permanent memory requirements are 1K
words for the DMCll driver and 4K words for the
NSP protocol module. At least 3K words of extended
buffer pool space should be allocated for message
buffers for operation of a single DMCll. Additional
lines will require additional buffer space depending
on line speed.
DECnet/E utilities require up to 16K words of user
memory when resident. The file transfer utilities additionally require the RMS-ll run-time system. The other utility programs require a BASIC-PLUS run-time
system.
DECnetlE Configuration and Performance
Cost, performance, and function selection must be
considered when deciding where nodes should be located and how they should be interconnected with
communication lines. Dial-up telephone circuits are
often best for networks with low messages traffic.
Other applications require higher-speed communication lines. DECnetiE supports both types of network
traffic over pOint-to-point communication lines, but
each application must be analyzed separately by the
user and/or a DIGITAL Software Specialist.
Each DECnet/E node must be analyzed individually to
determine its performance in a given network application. Network throughput and responsiveness depend
on many factors, including:
• network topology
• CPU power and system loading
• communication line characteristics
• allocation of system buffers
• swapping overhead and scheduling priorities

Maximum Line Configurations
on PDP-11/34, 11/70 CPUs
Device
Group

DMC11-AR,-DA
DMC11-AL,-MD
DMC11-AL,-MA

Max. No. Max.
Max. Device Mode
of Lines Line Speed
Bandwidth
(K bits/sec> (K bits/sec)
16
4
1

19.2
56.0
1000.0

307.2
224.0
1000.0

FDX,HDX
FDX,HDX
FDX,HDX

Device Group
DECnet/E supports only DMCll 's for DEC net communication. The DMCll-AL, -MD and DMC11-AL, MA options use coaxial cables for local interconnection. Line speed for the DMCll-AR and -DA is
determined by the modem used, up to the maximum
line speed shown.
Maximum Number of Lines
DECnet/E supports 16 communication lines only if all
of them use DMCll-AR, -DA interfaces. Higher speed
lines can be substituted using ratios of one DMCllAL, -MD line for four DMCll-AR, -DA lines.
Maximum Line Sp,eeds
Line speed of the OMC11-AR, -DA is dependent on
choice of modem.
Maximum Device Bandwidth
As explained above, these numbers are burst rates
obtained during half-duplex operation. Burst rates using full-duplex lines are twice the rates shown.
Mode
Message traffic on half-duplex (HDX) lines takes
place in one direction at a time. Simultaneous bidirectional communication is possible using full-duplex (FDX) lines.
MINIMUM HARDWARE REQUIRED:
Any valid RSTS/E system configuration with:
• additional main memory as specified under "DECnetiE Operation" above
• a DDll-B, -C, or -D system interface unit with one
or more of the following communications devices:
1. DMC11-AR or -DA remote synchronous EIA interface (to 19.2 kilobits/second)
2. DMC11-AL or -MD local synchronous interface
(56 kilobits/second)
3. DMC11-AL or -MA local asynchronous interface
(1 megabits/second)

SPD 10.73.2

DECnet/E, Version 1.0

-3OPTIONAL HARDWARE:
Additional DMC11 interfaces as described under
"DECnetlE Configuration and Performance" above.
PREREQUISITE SOFTWARE:
RSTS/E, Version 6C
OPTIONAL SOFTWARE:
None
TRAINING CREDITS:
None'
SUPPORT CATEGORY:
A - Software Support will be provided as stated in
the Software Support Categories Addendum to this
SPD.
Installation under Category A support will convert the
RSTS/E system into a node with connection potential
to a DEC net Phase II network. This installation does
not include a demonstration of network connection.
The Customer may purchase DECnetlE licenses with
options that do not include support services. The category of support applicable to such software is Category C. While a DECnet/E product option that does
not include support services is connected to a DECnet network, the category of support applicable to all
DECnet products in that network is Category C.
CU~TOMER _RESPQ~SIBILIT I ES:
Before installation of the Software, the Customer
must:
1. Install or have installed all hardware, including
terminals, to be used on the system.
2. Make available to DIGITAL . personnel all hardware, including terminals, to be used during installation for a reasonable period of time each
day, as mutually agreed upon by DIGITAL and
the Customer, until installation is complete.

Delays caused by any failure to meet these responsibilities will be charged at the then prevailing rate for
time and materials.
PREREQUISITE SUPPORT:
A Network Profile and DECnet Customer Support
Plan covering all intended network nodes and their
support must be prepared jointly by DIGITAL and the
Customer.
UPDATE POLICY:
Software Updates, if any, released by DIGITAL during
the one (1) year period following installation, will be
provided to the customer for a media charge (includes no installation). After the first year, updates, if
any, will be made available according to then prevailing DIGITAL policies.
ORDERING INFORMATION:
All binary licensed software, including any subsequent updates, is furnished under the licensing provisions of DIGITAL's Standard Terms and Conditions of
Sale, which provide in part that the software and any

part thereof may be used on only the single CPU on
which the software is first installed, and may be copied, in whole or in part (with the proper inclusion of
the DIGITAL copyright notice and any DIGITAL proprietary notices on the software) only for use on such
CPU. All source licensed software is furnished only
under the terms and conditions of a separate
Software Program Sources Agreement between Purchaser and DIGITAL.
Standard options with no sUPPQrt services are only
available after the purchase of one supported license.
When a software license is ordered without support
services, the category of support applicable to such
software is Category C.
A single-use license only option is a license to copy
the software previously obtaine.d under license, and
use such software in accordance with DIGITAL's
Standard Terms and Conditions of Sale. The category
of support applicable to such copied software is Category C.
The following key (0, E, F, Q, T, V, Z) represents the
distribution media for the product anc;j must be specified at the end of the order number,' e.g., QP690-AD
= binaries on 9-track magnetic tape.

o
E
F
Q
T
V
Z

9-track Magnetic Tape
RK05 Disk Cartridge
7 -track Magnetic Tape
RL01 Disk Cartridge
RK06 Disk Cartridge
RK07 Disk Cartridge
No hardware dependency

Standard Options
QP690 -A- Single-use license, binaries, documentation, support services (media: 0, E, F,
Q, T, V)
QP690 -C- Single-use license, binaries, documentation, no support services (media: 0,
E, F, Q, T, V)
QP690 -0- Single-use license only, no binaries, no
documentation, no support services
(media: Z)
ADDITIONAL SERVICES:
QJ680 -S- DECnet Levell Services (media: Z)
Level II services are also available. Consult the DECnet Phase II Products SPD (10.78) for a description of
Level I and Level II services.

SPD 10.73.2

DECnet/E, Version 1.0
-4-

ADDENDUM
SOFTWARE SUPPORT CATEGORIES
Each software product (hereinafter 'SOFTWARE') with a designated Support Category A or 8 in the applicable Software Product
Description (SPD) existing at the time of order will be the current release at the time of delivery and will conform to the SPD.
DIGITAL's sole obligation shall be to correct defects (nonconformance of the SOFTWARE to the SPD) as described below. Any
SOFTWARE with a designated Support Category C will be furnished on an 'as is' basis.
For SOFTWARE with a deSignated Support Category A or 8, DIGITAL will provide the services set forth below without additional
charge.
CATEGORY A
1. Upon notification by customer to the nearest DIGITAL office that the computer system, including all required prerequisite
hardware and software, is ready for the installation of the SOFTWARE, DIGITAL will install such SOFTWARE in any location
within the contiguous forty-eight (48) United States, the District of Columbia, or a country in which DIGITAL or a subsidiary
of DIGITAL has a software service facility. The notification must be received by DIGITAL and the system must be ready for
installation within thirty (30) days after the delivery of the SOFTWARE to customer or DIGITAL will have no obligation to
install. Installation will consist of: (1) verification that all components of the SOFTWARE have been received by customer, (2)
loading the SOFTWARE, and (3) executing a DIGITAL sample procedure.
2. During the ninety (90) day period after installation, if the customer encounters a problem with the current unaltered release
of the SOFTWARE which DIGITAL determines to be a defect in the SOFTWARE, DIGITAL will provide the following remedial
service (on site where necessary): (1) if the SOFTWARE is inoperable, apply a temporary correction (TC) or make a
reasonable attempt to develop an emergency by-pass, and (2) assist the customer to prepare a Software Performance
Report (SPR) and submit it to DIGITAL.
3. During the one (1) year period following installation, if the customer encounters a problem with the SOFTWARE which his
diagnosis indicates is caused by a SOFTWARE defect, the customer may submit an SPR to DIGITAL. DIGITAL will respond
to problems reported in SPRs which are caused by defects in the current unaltered release of the SOFTWARE via the
Maintenance Periodical for the SOFTWARE, which reports SPRs received, code corrections, temporary corrections, generally
useful emergency by-passes and/or notice of the availability of corrected code. Software Updates, if any, released by
DIGITAL during the one (1) year period, will be provided to the customer on DIGITAL's standard distribution media as
specified in the applicable SPD. The customer will be charged only for the media on which such updates are provided,
unless otherwise stated in the applicable SPD, at DIGITAL's then current media prices.
CATEGORY B
During the one (1) year period following delivery, the services provided to the customer will be the same as set forth in 3 above.
CATEGORY C
SOFTWARE is provided on an 'as is' basis. Any software services, if available, will be provided at the then current charges.
DIGITAL shall have the right to make additional charges for any additional effort required to provide services resulting from
customer use of other than current unaltered release of the SOFTWARE operated in accordance with the SPD.