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Chapter 12: AI2524 X.25 Configuration Steps
August 1997 Page 12-9
2524UM
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-delay
command to slow down the interface.
transmitter-delay 1000
Configure
Additional X.25
Interface
Parameters
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.
To configure less common X.25 interface parameters for these special
needs, perform these tasks, as needed:
z
Configure the X.25 Level 3 Timers
z
Configure X.25 Addresses
z
Establish a Default Virtual Circuit Protocoll
z
Disable 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:
z
Set DTE T20 Restart Request.
x25 t20
seconds