IBM SC30-3681-08 manual Connection Request Timer, Local XTP, XTP and Closed User Groups

Using XTP

This causes the search for the remote DTE to proceed to the next router in the peer router list.

If a pass through the list of peer routers is completed without a successful connection through any of the peer routers, the call to the local DTE is cleared.

Connection Request Timer

The Connection Request Timer is used to ensure that no call setup procedure hangs for an indeterminable time. There is a timer con®gured for each peer router.

Example:

XTP config>add peer-router

Router©s internal IP Address [0.0.0.0]?10.0.0.2

Connection setup timeout [230]?60

The Connection Request Timer can be con®gured from 10 to 480 seconds. The default is 230 seconds. This default was determined based on the fact that the default setting for the X.25 Call Request Timer is 200 seconds.

The timer is started when an attempt is made to complete a call through a peer router. It is stopped when the call attempt is either accepted or rejected by the peer router.

Local XTP

Local XTP allows you to route incoming X.25 traffic to the same or different interfaces on the current router. To con®gure local XTP, specify the router's internal IP address as a peer address on the add peer command.

XTP and Closed User Groups

XTP supports closed user groups through the local DTE address de®ned by the add local or the add cug command. To enable XTP to use closed user groups, you must:

vEnable CUG or BI-CUG on the appropriate X.25 interfaces.

vSupply the XTP protocol-speci®c CUGs using theadd cug and add bi-cugcommands, if desired.

vSupply the appropriate closed user group numbers in the add local command. These include:

±Closed user group number

±Preferred closed user group number

±Bilateral closed user group number

±Preferred bilateral closed user group number

vEnable CUG insertion or deletion for the interface in the national enable cug_insertion or national enable cug_deletion commands, if desired.

vEnable the CUG 0 override option on the national enable cug 0 override command, if desired.

Chapter 28. Using XTP 365