AIS AI2524 user manual Enable X.25 Routing, Example X.25 Route Address Pattern Matching

AI2524 Router Card User’s Manual

The X.25 switching subsystem supports these facilities and parame ters:

z D-bit negotiation—Data packets with the D-bit set are passed through transparently

zVariable-length interrupt data

zFlow control parameter negotiation

zWindow size up to 7, or 127 for modulo 128 operation

zPacket size up to 4096, if the LAPB layers used are capable of han- dling the requested siz

zBasic closed user group selection

zThroughput class negotiation

zReverse charging and fast select

To configure X.25 routing, perform these tasks:

zEnable X.25 Routing

zConfigure a Local X.25 Route

zConfigure XOT (Remote) X.25 Rout

zConfigure a Locally Switched PVC

zConfigure an XOT (Remote) PVC

You may also need to configure additional X.25 routing features, as re- quired for your network.

Enable X.25 Routing

In global configuration mode, enable X.25 routing to use local switch- ing or XOT by typing:

x25 routing [use-tcp-if-defs]

The use-tcp-if-defskeyword is used by some routers that re ceive remote routed calls from older versions of XOT; it might be needed if the originating router cannot be migrated to a new softwar release.

Example: X.25 Route Address Pattern Matching

This example shows how to route X.25 calls with addresses whos first four Data Network Identification Code (DNIC) digits are 1111 to interface serial 3, and to change the DNIC field in the addresses pre sented to the equipment connected to that interface to 2222. The \1 in

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