Appn trace enhancements, Accounting and node statistics – IBM SC30-3865-04 User Manual

Page 70

Module entry and exit traces specify component-level traces concerning the entry
and exit of APPN modules.

General traces specify component-level traces concerning the APPN
components.

Miscellaneous traces specify trace information about DLC transmissions and
receptions.

APPN Trace Enhancements

The following are enhancements to the APPN traces:

You can now enable/disable all trace flags through

talk 6

using the

Turn all trace

flags off question asked under the set trace command or by using the
Configuration Program. See 121 for more information.

You can now filter the data link control transmissions and receptions trace data
by message type and/or by specifying the maximum length of data per packet to
trace. See Table 14 on page 119 for information.

Accounting and Node Statistics

Intermediate sessions are LU-LU sessions that pass through the APPN network
node, but whose endpoints (origin and destination) lie outside of the network node.
Information about intermediate sessions is generated by the ISR component in the
network node and falls into two categories:

Intermediate session names and counters

Route selection control vector (RSCV) data for intermediate sessions

Enabling the

collect intermediate session information parameter instructs the router

to collect session names and counters for all active intermediate sessions. Enabling
the

save RSCV information for intermediate sessions parameter instructs the router

to collect RSCV data for active intermediate sessions. The RSCV data is useful for
monitoring session routes. In both cases, you can retrieve the data on active
sessions by issuing SNMP get and get-next commands for variables in the APPN
Management Information Base (MIB).

The

collect intermediate session information function defaults to being disabled. You

can enable it using the Configuration Program or using the set management

talk

command. Once enabled, you can control it, including disabling and re-enabling,

using SNMP set commands to the APPN accounting MIB.

Note: This function can use a significant amount of APPN memory. You should

configure APPN with the needed memory before you enable the collection of
ISR information.

For accounting purposes, you can maintain records of intermediate sessions
passing through the network node. The data records can be created and stored in
router memory. SNMP must be used to retrieve data from accounting records stored
in the router’s local memory.

Notes:

1. You can enable collection of active intermediate session data (session counters

and session characteristics) in SNMP MIB variables explicitly or implicitly.

To enable collection explicitly, set the

collect intermediate session information

parameter to yes.

APPN

MRS V3.2 Protocol Config Ref Vol 2

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