IBM SC30-3865-04 APPN Trace Enhancements, Accounting and Node Statistics

vModule entry and exit traces specify component-level traces concerning the entry

and exit of APPN modules.

vGeneral traces specify component-level traces concerning the APPN

components.

vMiscellaneous traces specify trace information about DLC transmissions and

receptions.

APPN Trace Enhancements

The following are enhancements to the APPN traces:

vYou 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.

vYoucan 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 119for 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:

vIntermediate session names and counters

vRoute 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

6command. 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. SNMPmust be used to retrieve data from accounting records stored

in the router’s local memory.

Notes:

1. Youcan enable collection of active intermediate session data (session counters

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

Toenable collection explicitly, set the

collect intermediate session information

parameter to yes.

APPN

40 MRS V3.2 Protocol Conﬁg Ref Vol2