HP 3000 Series Manual - Página 2

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SNA NRJE/iX requires the installation and use

of SNA/SDLC Link/iX (30291A), SNA/Token

Ring Link/iX (J2249A, requires MPE/iX

Release 5.0 or later) or SNA/X.25 Link/iX

(30298A), SNA NRJE/V requires SNA Link/V

(30246A). SNA/SDLC Link/iX, SNA/Token

Ring Link/iX, SNA X.25 Link/iX, and SNA

Link/V (referred to jointly as SNA Link)

manage the physical link to the host and

implement protocols in the lower three layers

of SNA. Each link product contains software,

a hardware interface card, and a cable. SNA

NRJE can run simultaneously with other

HP SNA services 9for example, SNA IMF) on

both the MPE V or MPE/iX systems. In

addition, all SNA services can run

simultaneously over the same SNA Link.

Functional Description

SNA NRJE must be used with an SNA Link

product, which implements protocols in the

lower three layers of SNA and provides

physical connectivity to the IBM host via

leased/dial-up lines or LAN. SNA Link

supports line speeds up to 56 KB/s on MPE V

and 16 MB/s on MPE/iX as well as

simultaneous batch and interactive

communications to an IBM host over a single

line.

SNA NRJE supports up to eight workstations

on an HP 3000. When these workstations are

used to communicate with different hosts,

each workstation must use a different SNA

Link.

The SNA NRJE user interface has commands

for submitting jobs, directing the output to

specific devices, directing the output to

specific predefined file equations, displaying

job status, and canceling jobs (see table of

Selected User Commands on next page for

other commands). These commands can be

issued interactively through a terminal, or

issued as part of an HP 3000 program

executing NRJE intrinsics. MPE commands

can be executed in the middle of SNA NRJE

operations. The HP 3000 will concurrently

process user applications and data

communications with an IBM mainframe.

In addition to SNA NRJE user commands, an

operator with Node Manager (NM) capability

has commands to start and stop the batch

workstations, obtain the host remote console,

start and stop tracing and other functions.

These commands may be issued either

interactively or through a batch job.

Operation of the user or operator interface is

independent of the status of the data

communications line. Submitted jobs are held

in a transmission queue and automatically

sent to the host when the line becomes

available.

Similarly, job output is held at the host and

sent to the HP 300 when the line connection

is made.

The Job Management feature of SNA NRJE

allows users, at time of submittal, to specify

the particular device to which their job output

is to be directed. If no device is specified,

output is directed to a default destination,

according to the configuration of SNA NRJE

by the NodeManager. No further user

intervention is required.

Note: Job Management is not available to

anyone communicating with a host using

the VSE/POWER job entry subsystem.

Output can be received on any standard

output device on the HP 3000 such as tape

units, disks, and printers. Similarly, jobs can

be input device such as terminals, card

readers, or disk.

HP 3000

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