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AE-EA86J-TE

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Document:	Software Product Description
Order Number:	AE-EA86J-TE
Revision:	000
Pages:	8
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Software
Product
Description
PRODUCT NAME:

DECnet-ULTRIX, Version 4.0 for RISC and VAX
ULTRIX Network Software (End-node Only)

DESCRIPTION
DECnet-ULTRIX, Version 4.0 is a Phase IV endnode implementation of Digital Network Architecture
(DNA) for the ULTRIX Operating System and ULTRIX
Worksystem Software (UWS) for VAX and RISC systems.
The DECnet-ULTRIX software enables communication
among different networked Digital systems that use the
DNA Phase IIIIIV· protocols. At the same time, users
and user programs can communicate with non-Digital
systems that use the Internet (TCP/IP-based) protocols. DECnet-ULTRIX offers the following capabilities:
task-to-task communications, network virtual terminal,
remote file transfer, mail, coexistence with the Internet
protocols (TCPIIP-based), and network-wide resource
sharing and management as defined by the DNA protocols. DECnet-ULTRIX can communicate with and is
warranted for use only with other Digital Phase III/IV·
DECnet products.
DECnet-ULTRIX allows ULTRIX users to access the
resources of Phase IV DECnet networks. With proper
network planning, DECnet-ULTRIX nodes can participate in DECnet networks with up to 1023 nodes per
area and up to 63 areas per network. The DECnetULTRIX software enables communication among different, networked Digital systems that use the DNA
Phase III/IV· protocols. At the same time, users and
user programs can communicate with non-Digital systems that use the TCPII P protocols.
The network functions available to a DECnet-ULTRIX
user depend, 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 DECnet-ULTRIX Phase IV nodes
have all the functions described in this SPD. Networks
that combine DECnet-ULTRIX nodes with other DECnet products may limit the functions available to the
DECnet-ULTRIX user because some DECnet-ULTRIX
features may not be supported by all DECnet products.
Conversely, a user of another DECnet implementation
will not necessarily have access to all DECnet-ULTRIX

SPD 26.83.08

functions. The DECnet products and functions available to users on mixed networks can be determined by
comparison of the SPDs for the appropriate products.
Note that incoming connections from all Phase III systems to DECnet-ULTRIX systems are supported. SUI>port for outgoing connections Is limited to the following
Phase I II systems: DECnet-VAX and DECnet-RT. In
addition, DECnet-ULTRIX only supports the connection of Phase IV routers/routing nodes on the point-topoint lines.

Phase IV End Node
DECnet-ULTRIX is a Phase IV end-node only implementation of DNA and as such, can communicate directly with any other Phase IV node on the Ethernet
or with any other Phase III/IV· node in the network via
a routing node on the same Ethernet or connected via
point-to-point lines (either a dedicated DECnet Router
Server, (SPD 30.34.xx) or a full-function VMS or RSX11M/11M-PLUS system with routing capabilities). A
Phase IV end node can communicate with any Phase
III· node in the same area. Communications with
Phase II nodes is not supported.
DECnet-ULTRIX supports the downline load function
for the following products for both VAX and RISC p,l~t,.
forms:
•

DECserver 100

•

DECserver 200

•

DECserver 300

•

DECrouter 100

•

DECrouter 2000

•

Internet Portal

• X25router 100
• X25router 2000
DECnet-ULTRIX nodes cannot route messages 011 be-half of other nodes in the network. Since end nodes
do not route messages, they do not need to store or
update routing databases. Consequently, end nodes
have less overhead than routing nodes.

May 1990
AE-6A~E

DECnetoaUlTRIX, Version 4.0 for RiSe and VAX

SPD 26.83.08

DEenet and TCPIIP Coexistence

Mail

DECnet-ULTRIX supports the coexistence of the DECnet and TCPIIP protocols. Coexistence means that
DECnet and TCPIIP can run together simultaneously
(DECnet-ULTRIX systems use DECnet to communicate with other Phase III/IV* systems in DECnet networks and TCPIIP to communicate with non-Digital
systems in Internet networks). DECnet and TCPIIP
can also share the same system resources, such as
the DEUNA and DEQNA Ethernet interfaces, and programs can be written in such a way that either of the
lower-level protocols, NSP or TCP, is used. In general, existing programs running over TCPIIP can be
easily modified to run with DECnet. Taking DECnet
programs and having them run over TCPIIP can be
done, but only if they do not make use of operations
that are specific to DECnet.

The DECnet-ULTRIX software allows users to send
and receive mail to and from users on other DECnet
Phase III/IV* systems The DECnet-ULTRIX mail utility
extends the existing ULTRIX mail system to Include
support for DECnet. Both the DECnet mail utility and
the current ULTRIX mail systems share the same user
interface. The syntax of the message address determines how the mail will be delivered. For example,
to send mail from one DECnet system to another, the
message address syntax is nodename::username.

Task-to-Task Communications
Task-to-Task Communications allows cooperating programs running on any DECnet Phase III/IV* node to
exchange data. This is an extension of the socket level
interface in the ULTRIX Operating System to include
support for DECnet's session control and end-to-end
communications (NSP) layers.

Network Virtual Terminal
DECnet-ULTRIX provides both incoming and outgoing heterogeneous remote terminal support (CTERM).
This allows a terminal user on a DECnet-ULTRIX node
to establish a logical connection to another DECnetULTRIX, DECnet-DOS, DECnet-VAX, or DECnet11M/11 M-PLUS node. It also allows a terminal user on
another DECnet-ULTRIX, DECnet-VAX, or a DECnet11 M/11 M-PLUS node to establish a logical connection
to a DECnet-ULTRIX node. This connection makes
the terminal appear as if it were physically connected
to the remote system and the user can use all the standard system and network utilities supported by that
remote node. This capability is particularly useful for
dOing remote program development and allows the terminal users on smaller application-oriented systems
to utilize the resources of other development-oriented
systems.

Network Management
The Network Control Program (NCP) performs three
primary functions:
•

Displaying statistical and error information

•

Controlling network components

•

Testing network operation

These functions can be performed locally or executed
at remote Phase 111* or Phase IV systems.
NCP allows the operator to display the status of DECnet activity at any Phase 111* or Phase IV node in the
network. The operator can choose to display statistics related to the node itself, including traffic and error data, or examine data rates and error conditions
in the Ethernet controller. The local operator can also
perform a large number of operations to examine and
control functions throughout the network.

Remote File Transfer
The remote file transfer cap9bility of DECnet-ULTRIX
uses "dcp" , the network file copy utility. DCP lets
users transfer files between DECnet-ULTRIX nodes
and other DECnet Phase IIIIIV* nodes.

DECnet-ULTRIX provides network event logging to a
terminal device, disk file, or remote node. The NCP
utility can be used to enable and disable the event
logging facility as well as to optionally filter specific
events.

Nretwork File Access
Remote file access from other Digital systems is supported; user programs on other DECnet Phase IIIIIV*
systems can perform directory operations, as well as
sequentially read, write, create, delete, and print files
on a DECnet-ULTRIX system.

NCP can also be used to test specific components
of the network. NCP enables transmission and reception of test messages either between nodes or through
controller loopback arrangements. The messages can
then be compared for possible errors. NCP allows
performance of a logical series of tests that will aid in
isolating network problems.

DECnet-ULTRIX, Version 4.0 for RISC and VAX

SPD 26.83.08

The principal characteristics of the Ethernet physical
layer are a signaling rate of 10 million bits per second,
and a maximum station separation of 2.5 kilometers.
Actual data rates will be substantiaUy less than 10 million bits per second due to the limitations of the Ethernet controllers. The Ethernet data link layer is characterized by the channel access discipline known as
the Carrier Sense Multiple-Access with Collision Detect (CSMAlCD).

DECnet-lnternet Gateway

A semi-transparent, bi-directional DECnet-lnternet gateway is an Integral part of the DECnet-ULTRIX software.
This gateway, based on the TCP/IP in 4.3 eSD provides bidirectional network access between DECnet
and Internet systems. It allows DECnet and Internet
system users to communicate and cooperate through
their respective file transfer, remote login, and mail capabilities. An Internet system user can use the FTP,
TELNET, and SMTP protocols to communicate with
a DECnet system user who uses the DAP, CTERM,
MAIL-11 protocols and vice versa. In addition, the
gateway does not require special software on systems
that use its service, nor does It require accou,nts for remote users on the gateway system.

HARDWARE REQUIREMENTS
VAX, MicroVAX, VAXstation or Digital RISC system
configurations as specified in the System Support Addendum (SSA 26.83.08-x).

OPTIONAL HARDWARE

802.3 Compatibility

None

DECnet-ULTRIX supports receipt of 802.3 packets and
transmission of 802.3 packets via a programming interface.

SOFTWARE REQUIREMENTS*
For VAX, MicroVAX, DECstation 3100S, DECsystem
3100, DECsystem 5400/5810/5820 systems:

DECnet-ULTRIX Configuration and Performance

Configuring a DECnet-ULTRIX node to satisfy a user's
application requirements Involves making trade-offs of
cost, performance, and functionality. The performance
of a given DECnet-ULTRIX node depends not only on
the expected network traffic and resultant processing,
but also on the amount of concurrent local processing at that node. When configuring a DECnet-ULTRIX
node, the following factors should be considered:
•

•

ULTRIX Operating System

•

DECnet-ULTRIX

For VAXstation, DECstation 2100 and DECstation
3100 Systems:
•

ULTRIX Worksystem Software

•

DECnet-ULTRIX

* Refer to the UlTRIX Optional Software Cross Re'lerence Table (SPD 26.99.xx) or the System Support Addendum of this product for availability and
required versions of prerequisite software (SSA
26.83.08-x).

CPU type

• Message size and frequency of transmission by all
network applications
• "Local" applications

ORDERING INFORMATION

Communications Protocols

Software Licenses: QL-716A*-**
Software Media: QA-716A*-**
Software Documentation: QA-716AA-GZ
Software Product Services: QT-716A*-*""

DECnet-ULTRIX V4.0 supports two communications
protocols: Ethernet, Version 2.0, and synchronous
DDCMP (Digital Data Communications Message Protocol) for the data link and physical link layers.
DECnet-ULTRIX V4.0 supports both full and half duplex point-to-point synchronous DDCMP lines as well
as DMC compatibility mode for backwards compatibility with the DMC device.

* Denotes variant fields. For additional information
on available licenses, services and rnediareferJto
the appropriate price book.

DECnet-ULTRIX V4.0 for RISC only supports Ethernet,
Version 2.0 communications protocol both at the data
link and physical link layers.

DECnet-ULTRIX, Version 4.0 for RISC and VAX

SPD 26.83.08

For more information about Digital's licensing terms
and policies, contact your local Digital office.

SOFTWARE LICENSING
This software Is furnished under the licensing provisions of Digital Equipment Corporation's Standard
Terms and Conditions. For more information about
Digital's licensing terms and policies, contact your local Digital office.

SOFTWARE PRODUCT SERVICES
A variety of service options are available from Digital.
For more information, contact your local Digital office.

LICENSE MANAGEMENT FACILITY SUPPORT

SOFTWARE WARRANTY

This layered product supports the ULTRIX License
Management Facility.

Warranty for this software product is provided by Digital with the purchase of a license for the product as
defined in the Software Warranty Addendum of this
SPD.

License units for this product are allocated on a CPUcapacity basis.

The DIGITAL Logo is a registered trademark of
Digital Equipment Corporation.

For more information on the License Management Facility, refer to the ULTRIX Software Product Description (SPD 26.40.xx), the ULTRIX Worksystem Software Software Product Description (SPD 28.22.xx) or
the License Management Facility manual of the ULTRIX documentation set.

DECnet-ULTRIX, DECstation, DECsystem, ULTRIX,
ULTRIX Worksystem Software (UWS), VAX, MicroVAX and VAXstation are trademarks of Digital
Equipment Corporation.

System
Support
Addendum
PRODUCT NAME:

DECnet-ULTRIX, Version 4.0 for RISC and VAX
ULTRIX Network Software (End-node Only)

SSA 26.83.08-A

HARDWARE REQUIREMENTS

SOFTWARE REQUIREMENTS

Tables 1 and 2 at the end of this SSA indicate the
valid communications devices to be used with DECnetULTRIX on systems running ULTRIX V4.0.

For VAX, MicroVAX, DECstation 3100S and DECsystem systems:

Table 3 at the end of this SSA indicates the valid communcations devices to be used with DECnet-ULTRIX
V4.0 on systems running ULTRIX Worksystem Software V4.0.
Table 4 at the end of this SSA indicates systems that
contain integral Ethernet Controllers and do not require
additional communcations devices.

Block Space Requirements for VAX: (Block Cluster
Size = 1):

•

ULTRIX Operating System V4.0

•

DECnet-ULTRIX V4.0

For VAXstation and DECstation Systems:
•

ULTRIX Worksystem Software V4.0

•

DECnet-ULTRIX V4.0

OPTIONAL SOFTWARE
None

GROWTH CONSIDERATIONS

Disk space required for installation/use:
.02M bytes in root file system
2.4M bytes in /usr
2.42M bytes total

The minimum hardware/software requirements for any
future version of this product may be different from the
minimum requirements of the current version.

Block Space Requirements for RISC:

DISTRIBUTION MEDIA

Disk space required for use installation/use:
.02M bytes in root file system
3.70M bytes in /usr
3.72M bytes in total

Tape: TK50 Streaming Tape, 9-Track 1600 BPI Magtape

On a server, this disk space is also required for each
diskless environment in which DECnet is installed. In
addition, each diskless client using an environment
which has DECnet will require another .02M bytes on
the server. The sizes are approximate; actual sizes
may vary depending on the user's system environment, configuration, and software options selected.

OPTIONAL HARDWARE
None

This product is also available as part of the ULTRIX
Consolidated Software Distribution on CDROM.

ORDERING INFORMATION
Software Licenses: QL-716A*-**
Software Media: QA-716A*-**
Software Documentation: QA-716AA-GZ
Software Product Services: QT-716A*-**
* Denotes variant fields. For additional information
on available licenses, services and media, refer to
the appropriate price book.

May 1990

AE-MN86E-TE

DECnet-ULTRIX, Version 4.0 for RISC and VAX

SSA 26.83.0B-A

Table 1

DEQNA

DMV11

X
X

Processor

DELQA

MicroVAX II
VAXserver 100

DESQA

DESVA

MicroVAX 2000

VAXserver 2000
VAXserver 3300/3400

X
X

MicroVAX 3500/3600/3800/3900

VAXserver 3500/360013602/3800/3900

OECsystem 5400

MicroVAX 3300/3400

X
X

Table 2

DESNA

DESNI

VAX 6000-210/220/230/240

VAXserver 6000-21012201
2301240

VAX 6000-310/320

VAXserver 6000-31 0/3201
330/3401350

VAX 6000-410/420/430/
440/4501460

VAXserver 6410/6420

Processor

DEUNA

DELUA

DMR11

VAX-111750, VAX-111780,
VAX-111785

VAX 8600/8650

VAX 8200/8250/8300/
8350/8500/8530

VAX 8550/8700/8800/8810

VAX 8820/8830/8840

OECsystem 5810/5820

DEMNA

DECnet-ULTRIX, Version 4.0 for RISC and VAX

SSA 26.83.08-A

Table 3
Processor

DEQNA

DELQA

DMV11

VAXstation 2000
VAXstation IVII GPX
VAXstation 3200/3500

DESVA
X

Table 4
ULTRIX V4.0

ULTRIX Worksystern Software V4.0

MicroVAX 3100

VAXstation 3100/3520/3540

VAXserver 3100

DECstation 2100/3100

DECstation 3100S

DECstation 5000 Model 200

DECsystem 3100
DECsystem 5000 Model 200
DECsystem 5000 Model 200 Server