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C.2.3 NSC - status change segment

The NSC segment can be used to request the start-up, shut-down, and/or migration (to a different cpu or file-server/file-system) of a particular application. It can also be used in an unsolicited update from one system to another to announce the start-up, shut-down, or migration of an application.

Figure C-3. NSC attributes

SEQ

LEN

DT

R/O

RP/#

TBL#

ITEM#

ELEMENT NAME

1

4

IS

R


0333

01188

Network Change Type

2

30

ST




01189

Current CPU

3

30

ST




01190

Current Fileserver

4

30

ST




01191

Current Application

5

30

ST




01192

Current Facility

6

30

ST




01193

New CPU

7

30

ST




01194

New Fileserver

8

30

ST




01195

New Application

9

30

ST




01196

New Facility

C.2.3.0 NSC field definitions

C.2.3.1 Network change type (IS) 01188

Definition: This field contains the type of change being requested (if NMR query) or announced (if NMD unsolicited update). Refer to user-defined table 0333 - Network change type for suggested values. Implies that "new" version starts up with no loss or duplication of data as old one is shutting down (if possible).

User-defined Table 0333 - Network change type

Value

Description

SU

Start up

SD

Shut down

M

Migrates to different CPU

C.2.3.2 Current CPU (ST) 01189

Definition: This field contains a site-specific name for the current CPU.

C.2.3.3 Current fileserver (ST) 01190

Definition: This field contains a site-specific name for the current fileserver or file system used by this application.

C.2.3.4 Current application (ST) 01191

Definition: This field contains a site-specific name available to identify the "current" application process used for interfacing with lower level protocols. To be used in conjunction with the sending/receiving system and facility values in the MSH.

C.2.3.5 Current facility (ST) 01192

Definition: This field contains a site-specific name for the current facility used by this application. To be used in conjunction with the values for the sending/receiving system and facility values in the MSH.

C.2.3.6 New CPU (ST) 01193

Definition: This field contains a site-specific name for the new CPU.

C.2.3.7 New fileserver (ST) 01194

Definition: This field contains a site-specific name for the new fileserver or file system used by this application.

C.2.3.8 New application (ST) 01195

Definition: This field contains a site-specific name available to identify "new" application processes used for interfacing with lower level protocols. To be used in conjunction with the sending/receiving system and facility values in the MSH.

C.2.3.9 New facility (ST) 01196

Definition: This field contains a site-specific name for the new facility used by this application. To be used in conjunction with the values for the sending/receiving system and facility values in the MSH.

C.2.3.10 NSC use notes

Fields 2-9. These are not applicable ("n/a") when the type of change being requested or reported is start-up or shut-down. If the change is of type "M", at least one of fields 2-5 must be different from its corresponding field in range 6-9.

Fields 4-5, 8-9. See definitions for the MSH, message header segment, in Chapter 2, (Control Section), for fields 3-4, for system and facility. "Application" is available for interfacing with lower level protocols. "Facility" is entirely site-defined.

Fields 2-3, 6-7. Entirely site-defined.

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