AIS AI2524 Configure Additional Interface, Parameters, Configure the X.25 Level 3 Timers

Chapter 12: AI2524 X.25 Configuration Steps

These commands configure the X.25 map. If you want to exchange routing updates with any of the routers, they would need broadcast flags. If the X.25 network is the only path to the routers, static routes are generally used to save on packet charges. If there is a redundant path, it might be desirable to run a dynamic routing protocol.

x25 map IP 172.25.9.3 31370019134 ACCEPT-REVERSE

x25 map IP 172.25.9.2 31370053087

ACCEPT-REVERSE allows collect calls.

If the PDN cannot handle fast back-to-back frames, use the trans- mitter-delaycommand to slow down the interface.

transmitter-delay 1000

Configure

Additional X.25

Interface

Some X.25 applications have less common, or special, needs. Several X.25 parameters are available to modify the X.25 protocol behavior for these applications.

Parameters

To configure less common X.25 interface parameters for these special needs, perform these tasks, as needed:

zConfigure the X.25 Level 3 Timers

zConfigure X.25 Addresses

zEstablish a Default Virtual Circuit Protocoll

zDisable Packet-Level Protocol (PLP) Restarts

Configure the X.25 Level 3 Timers

The X.25 Level 3 retransmission timers determine how long the Cisco IOS software waits for acknowledgment of control packets. You can set these timers independently. Only those timers that apply to the in- terface are able to be configured. (A DTE interface does not have the T1x timers, and a DCE interface does not have the T2x timers.)

To set the retransmission timers, perform any of these tasks in inter- face configuration mode:

zSet DTE T20 Restart Request. x25 t20 seconds

August 1997	Page 12-9
2524UM