10.75.05_7802_DECnet 11M 10.75.05 7802 DECnet

10.75.05_7802_DECnet-11M 10.75.05_7802_DECnet-11M

10.75.05_7802_DECnet-11M The Eye | File Listing

User Manual: 10.75.05_7802_DECnet-11M

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momoomo

Software

Product

Description

PRODUCT NAME: DECnet-11 M, Version 2.0

DESCRIPTION:

DECnet-11

M,

Version 2.0, allows a suitably configured

RSX-11

M system to participate

as

a Phase

II

DECnet

node in pOint-to-point computer networks. DECnet-

11

M offers task-to-task communications, network file

transfer, and network resource-sharing capabilities,

using the DIGITAL Network Architecture (DNA) proto-

cols. DECnet-11M communicates with adajacent

nodes over synchronous and asynchronous commun-

ication lines, and parallel interfaces. Access to DEC-

net-11 M is supported for

RSX-11

M user programs

written in MACRO-11 and FORTRAN.

DECnet-11 M

is

a Phase

II

network product and is

warranted for use only with Phase

II

DECnet products

supplied by DIGlT AL.

The functionality available to an RSX-11 M user de-

pends, in part, on the configuration of the rest of the

network. Each DECnet product offers its own level of

functionality and its own set of features to the user.

Networks consisting entirely of DECnet-11 M nodes

have the full functionality described in this SPD. Net-

works that mix DECnet-11M nodes with other DECnet

products may limit the functions available to the DEC-

net-11 M user because some DECnet-11 M features

may not be supported by all DECnet products.

The Phase

II

products and functions available to

users on mixed networks can be determined by com-

parison of the SPDs for the component products. An

overview of DECnet and common functionality avail-

able with mixed networks can be obtained from the

General Phase

II

DECnet SPD (10.78).

Task-to- Task Communication

Using DECnet-11

M,

a RSX-11 M user program written

in MACRO-11

or

FORTRAN can exchange messages

with other user programs using Phase

II

DEC

net DNA

protocols. The two user programs can be on the

same

or

adjacent DECnet nodes. (Adjacent nodes

control opposite ends of a pOint-to-point communica-

tion line.) If on adjacent nodes, the second node can

be any Phase

II

DECnet System that supports syn-

chronous

or

asynchronous communication lines

or

parallel interfaces.

The DECnet messages sent and received by the two

user programs can be in any data format. A compati-

ble non-privilged user interface is provided

for

DEC-

net-11 M Version 1 programs.

Network File Transfer Utilities

Using DECnet-11 M utilities, a user can transfer se-

February 1978

SPD 10.75.5

quential ASCII files between Phase

II

DECnet nodes.

Files can be transferred in both directions between

the locally supported

RSX-11

M File Control System

(FCS) devices and the file system of an adjacent

DECnet node.

The DECnet-11 M file transfer utilities support sequen-

tial file transfers for both

FCS

and RMS-11 supported

devices.

In

addition, other types of files may be transferred

where formats between the Phase

II

DECnet nodes

are compatible.

Additional facilities allow system command files to be

submitted to a remote node where the list of com-

mands must be

in

the format expected by the node

responsible for the execution. DECnet-11 M also al-

lows

RSX-11

M command files to be received from

other systems and executed.

DECnet-11 M 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 com-

mand. Wild cards are not permitted, nor are directory

listing commands implemented.

Network Resource Access:

File Access

File access is supported to and from remote DECnet

systems by explicit subroutine calls

in

FORTRAN and

MACRO tasks.

READ,

WRITE,

OPEN

and CLOSE, and DELETE

operations can be initiated by local FORTRAN and

MACRO tasks for sequential files residing at remote

DECnet systems. Other nodes supporting File Access

can exercise this capability for files located on the

RSX-11

M node. Fixed and variable length record for-

mats are supported. Further, files accessed remotely

can contain either ASCII

or

binary information.

Down-Line System Loading

Initial memory images

for

DECnet-11S nodes in the

network can be stored on

RSX-11

M file system

de-

vices and loaded into adjacent nodes. Load requests

can come from the local RSX-11 M operator

or

from

the remote node. Initial memory images for DECnet-

11S systems to be down-line loaded can be generat-

ed on a RSX-11M system.

Down-Line Task Loading

Programs to be executed on DECnet-11 S nodes in

the network can be stored on the DECnet-11 M sys-

tem, and loaded on request into adjacent nodes.

In

AE-3431F-TC

DECnet-11

M,

Version 2.0

addition,

programs

already executing on the adjacent

node may be checkpointed to the local file system

and later restored to main memory

of

the DECnet-

118

node. This and the preceding feature simplifies

the operation

of

network systems which

do

not have

mass storage devices, by allowing such system to use

remote mass storage device in a convenient and

straightforward manner.

Network

Control

Program

The Network Control Program (NCP)

performs

three

primary

types

of

functions: displaying statistics, con-

troling network components, and testing network

components.

Using DECnet-11 M NCP utility, an

operator

can dis-

play the status of

DEenet

activity at the local node.

The user

may

choose to display statistics related to

both

node

and communication lines, including data

on traffic and errors.

Output

can be directed to the

terminal

or

to a report file.

Using the DECnet-11 M NCP utility, the local console

operator

can also

perform

many network control

functions such as loading and unloading DECnet

components, starting and stopping lines, activating

the local node, and down-line loading DECnet-11 S

systems.

The

third

major

function

of

NCP

is

that of testing

components

of

the network. NCP can be used to

send and receive test messages over individual lines

either between nodes

or

through

other

controlled

loop

back arrangements. The messages can then be

compared. The user will find that NCP allows him to

perform a logical series

of

tests that will aid

in

iso-

lating problems.

Terminal Communication Utility

The DECnet-11 M TLK utility allows a user at a DEC-

net-11 M

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

al-

lows users on the two systems to type messages to

one another.

Communications

DECnet-11 M Version 2.0 supports the DIGITAL Data

Communications

Message Protocol (DDCMP) for full-

or

half-duplex transmission in point-to-point operation

using serial synchronous

or

asynchronous facilities.

DDCMP provides

error

detection/correction

and

physical link management facilities. Parallel facilities

are also

supported

in pOint-to-point operations. Auto-

answer capability is also supported.

The

minimum

number

of

point-to-point

links that can

be

supported

by a R8X-11 M node is one and the

maximum

is sixteen (this is based on CPU, type

of

communications

interface, and speed

of

interfaces).

Only one physical link may connect any pair of nodes.

DECnet-11 M Operation

DECnet-11M is implemented

as

an Ancillary Control

Processor (ACP)

under

RSX-11 M with DIGITAL-sup-

plied executive-level components, user-level tasks

and subroutines.

Minimum

memory residency re-

-2-

SPD

10.75.5

quirements for one

driver

and network code are 10K

words, and at least 1 K

words

for

temporary data sto-

rage. Consequently, the user should plan to dedicate

at least

11

K words of

memory

storage to network

control functions. Additional

memory

will be required

for

user-written network tasks and any DECnet utility

functions to be invoked (file transfer, network, control,

down-line loading, etc.). The additional

memory

re-

quired for the DECnet-11M Version 1 compatible in-

terface is approximately 1.SK words.

DECnet-11 M Configuration

The process of configuring a DECnet-11 M node is

based primarily on trade-offs

of

cost, performance,

and functionality, within the realm of satisfying the

user's application requirements. It can be readily ex-

pected that network applications will run the full

gamut

from low-speed, low-cost situations to those of

relatively high

performance

and functionality. The

performance

of

a given DECnet

node

is a function not

only of the expected network traffic and resultant

pro-

cessing ("global" conditions),

but

also of the amount

of

concurrent processing peculiar to that node ("lo-

cal" conditions). Thus,

node

performance depends on

many factors, including:

• CPU power

• number of device interrupts

per

unit time

• communication line characteristics

•

number

and size of buffers

• message size and frequency

• "local" applications

It

is

important to note that the rate at which user data

may be shipped

("throughput")

over a communica-

tions line may sometimes approach, but will never

equal or exceed, the actual line speed; the same may

be said for multiple lines as well. The reason, simply

stated, is that the actual

throughput

is

a function of

many factors, including the user application(s), net-

work topology, protocol overhead, and the factors

cited at the beginning of this section.

There are basically three

groups

of communications

interfaces presented in the tables below. They differ

in many respects, particularly in their effect upon

CPU utilization.

• With character interrupt devices such

as

the

DUP11, CPU cycles are required for not only the

DDCMP processing,

but

also for each character

sent and received. The following table shows the

various communications devices by category, and

maximum line speed

of

each.

• Devices such

as

the

DQ11

and

DV11

are DMA de-

vices. Since DDCMP is in the PDP-11 software,

CPU cycles are required

for

DDCMP line protocol

processing.

• The DMC11 is a

direct

memory

access (DMA) de-

vice. Also the DDCMP line protocol is executed in

microcode by the DMC11 communication controll-

er, thus off-loading the PDP-11 CPU. Thus, the only

DECnet load the processor sees is completed in-

coming and outgoing messages.

DECnet-11

M,

Version

2.0

DECnet-11M

DEVICE GROUPS

Device

Group

Maximum

Line

Speed/Kilobits/sec

Character

Interrupt

DP11

9.6

DL

11

DU11

DUP11

DZ11

DMA

DQ11-DA

DV11

KMC11 (DUP11)

KMC11 (DZ11)

DMC11

DMC11-AR, -DA

DMC11-AL, -MD

DMC11-AL,

-MA

9.6

9.6

9.6

9.6

9.6

9.6

9.6

19.2

56.0

1000.0

These tables describe the physical hardware configu-

rations supported by DECnet-11 M in terms

of

CPU

class and communication interface device group. It

should be noted that the attachment of such devices

as

AID converters and timesharing terminals may

reduce the maximum

number

of communication lines

which can effectively be supported.

NOTE:

In

the tables given below, the rated bandwidth

is

stated

for

a single device type. The maximum

bandwidth

for

an

intermix

of

device types cannot be

calculated from these tables.

DECnet-11M

Maximum

Line

Configurations

On

11/04-11/20 CPUs

Device

Group

Character

Interrupt

DMA

DMC11-AR, -DA

DMC11-AL,

-MD

DMC11-AL,

-MA

Max. No.

of

Lines

2

2

4

4

2

Maximum

Device

Bandwidth

(Kilobits/sec)

9.6

19.2

19.2

38.4

153.6

224.0

2000.0

Mode

FOX

HDX

FDX

HDX

FDX,HDX

FDX,HDX

FDX,HDX

-3-

SPD

10.75.5

DECnet-11M

Maximum

Line

Configurations

On 11/34-11/60 CPUs

Device Max. No. Maximum

Mode

Group

of

Lines Device

Character 8

Interrupt 8

DMA 8

8

DMC11-AR, -DA 16

DMC11-AL,

-MD

6

DMC11-AL,

-MA

2

Bandwidth

(Kilobits/sec)

14.4

28.8

30.6

61.2

307.2

336.0

2000.0

FOX

HDX

FDX

HDX

FOX,

HDX

FOX,

HDX

FDX,

HDX

Maximum

Line

Configurations

On

11/70

CPUs

Device Max. No. Maximum

Mode

Group of Lines Device

Character

Interrupt

DMA

8

8

16

16

Bandwidth

(Kilobits/sec)

19.2

FDX

38.4 HDX

40.8

FOX

81.6 HDX

DMC11-AR,

-DA

16 307.2

FOX,

HDX

DMC11-AL,

-MD

6 336.0

FOX,

HDX

DMC11-AL,

-MA

1 1000.0

FOX,

HDX

In

order

to achieve a viable configuration, the user

and/or

a DIGITAL software specialist

must

perform

a

level of application analysis which addresses the fac-

tors above.

In

the preceding tables, the

columns

have

the following meanings:

Maximum

Number

of

Lines

The largest

number

of physical lines which can be

attached and driven by the DECnet-11 M system.

Maximum Device Bandwidth

The maximum total

number

of bits per second which

can be handled by a CPU when all communication

devices

of

a single given type, such as character in-

terrupt, are

added

together. For example, DECnet-

11

M on a PDP-11 /1 0 can accomodate

one

full-duplex

character-interrupt device at 9.6KB,

or

two at 4.8KB,

or

four at 2.4KB.

Maximum

device bandwidth should

be calculated

for

all lines known to operate

concur-

rently.

Maximum

Line

Speed

The fastest

clock

rate at which the device can be

dri-

ven

under

DECnet-11 M. This means

that

even

if

specific devices have the ability to operate at a

maxi-

mum

rate, they must be configured subject to the

"maximum

device

bandwidth"

restriction above.

Mode

This indicates whether the line

is

operating in either

half-duplex (a single-bit stream)

or

full-duplex (two

concurrent bit streams) mode. In some instances in

the tables, a half-duplex line is quoted as having

DECnet-11 M, Version 2.0

maximum

bandwidth

approximately

double

that of the

comparable

full-duplex

line. This reflects the single

bit

stream character

of

half-duplex

lines, and the fact

that two

of

them place a load on the CPU roughly

equivalent to one

full-duplex

line with traffic

in

both

directions.

MINIMUM

HARDWARE REQUIRED:

Any valid RSX-11 M system configuration with:

• a

minimum

of

11

K

words

additional available

mem-

ory

for

the DECnet-11 M software and data storage

• PDP-11/04 through PDP-11/70 central processor

with one

of

the following communications devices

supporting one line:

• DP11-DA low speed synchronous interface

• DU11-DA low speed synchronous interface

• DUP11-DA low speed synchronous interface

• DQ11-DA NPR synchronous interface

• DMC11-AR-DA synchronous EIA interface

• DMC11-AL-MD high speed local synchronous

interface

•

DMC11-AL-MA

high speed local synchronous

interface

• DL 11-E asynchronous interface with

modem

control

• DL 11-C asynchronous interface, 20mA

current

loop (1)

• DL 11-WA asynchronous

interface,20mAcurrent

loop (1)

• DZ11-A, -B multi-line asynchronous interface

for EIA interfaces (2)

• DZ11-C,

-0

multi-line asynchronous interface,

20mA

current

loop

(1,

2)

• DA11-B UNIBUS link, local cable

• DA11-AL UNIBUS link, long cable

NOTES:

(1) Req u i res either the H319 option for optical

isolation

or

one

side

of

the 20mA line to be in

passive mode.

(2) All lines on this interface must be dedicated

as DECnet links.

OPTIONAL HARDWARE:

• Additional lines

and/or

communications interfaces

(from above)

up

to

maximum

as

defined in Maxi-

mum Line Configurations tables.

• KG11-A Communications Arithmetic Element (may

be used in conjunction with DP11, DU11, DQ11-DA,

DZ11, DL 11)

• KMC11-A (may be used in conjunction with up

to

8

DUP11s

or

with

up

to a 16-line DZ11)

•

DV11-AA/AB

multi-line NPR synchronous interface

(1

)

NOTE:

(1) All lines on this interface must be

dedicated as DECnet links.

PREREQUISITE SOFTWARE:

RSX-11 M operating system, Version

3.1

-4-

SPD

10.75.5

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.

Install'tion

under

Category A

support

will convert the

RSX-11 M system into a node with connection poten-

tial

to

a DECnet Phase

II

network. This installation

does not include a demonstration

of

network connec-

tion.

The Customer may purchase DECnet-11 M licenses

with options that

do

not include

support

services. The

category of

support

applicable to such software is Ca-

tegory

C.

When

a DECnet-11 M

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.

CUSTOMER RESPONSIBILITIES:

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

hard-

ware, including terminals,

to

be

used during in-

stallation

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 responsi-

bilities 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 (in-

cludes no installation). After the first year, updates, if

any, will be made available according to then prevail-

ing DIGITAL policies.

ORDERING INFORMATION:

All binary licensed software, including any subse-

quent

updates, is furnished under

the

licensing provi-

sions 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

DECnet·11 M,

Version

2.0

Software Program Sources

Agreement

between Pur-

chaser and DIGITAL.

Standard

options

with no

support

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

obtained

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 Cate-

gory

C.

Source

and/or

listing

options

are

only available after

the purchase

of

at least one

binary

license and after a

source

license

agreement

is in effect.

The following key

(0,

E,

R,

T,

Z) represents the

distri-

bution media

for

the

product

and

must

be specified at

the end of the

order

number, e.g., QJ681-AD = binar-

ies on 9-track magnetic tape.

o

9-track

Magnetic Tape

E RK05 Disk

Cartridge

R

Microfiche

T RK06 Disk

Cartridge

Z No hardware

dependency

Standard

Options

QJ681

-A-

Single-use license, binaries,

documen-

tation,

support

services (media:

D,

E,

T)

QJ681

-C-

Single-use

license,

binaries,

documentation,

no

support

services

(media:

0,

E,

T)

QJ681

-0-

Single-use license only, no binaries, no

documentation,

no

support

services

(media: Z)

·5·

SPD 10.75.5

Update Options

Users of DECnet-11 M Version 1.2 whose specified

Support

Category warranty has

expired

may

order

under

license the following software

update

at

the

then

current

charge

for

such update. The update is

distributed

in b!nary

form

on the

appropriate

medium

and includes no installation

or

other

services unless

specifically stated otherwise.

QJ681

-H-

Binaries,

documentation

(media:

0,

E,

T)

QJ681

-N-

Sources

update

(media:

0,

E,

T)

Users of DECnet-11 M Version 1.2 whose specified

Support

Category

warranty

has

not

expired

may

or-

der

under

license the following software

update

for

the then

current

media

charge. The

update

is

distrib-

uted in binary

or

source form on the

appropriate

medium

and includes no installation

or

other

services

unless specifically stated otherwise.

QJ681

-W-

Binaries,

documentation

(media:

0,

E,

T)

QJ681

-L-

Sources (media:

D,

E,

T)

Source/Listing

Options

QJ681

-E-

AI!

sources (media:

D,

E,

T)

QJ681

-F-

Listings (media:

R)

Miscellaneous Options

QJ681

-G-

Pre-delivery kit (media: Z)

ADDITIONAL SERVICES:

QS680

-S-

DECnet Level I Services (media: Z)

Level

II

services

are

also available. Consult

the

DEenet

Phase

II

Products SPD (10.78)

for

a de-

scription

of

Level I and Level

II

services.

DECnet-11M, Version 2.0 SPD 10.75.5

-6-

ADDENDUM

SOFTWARE SUPPORT CATEGORIES

Each software

product

(hereinafter 'SOFTWARE') with a designated

Support

Category A

or

B

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

B,

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

an

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

deve"lop

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.