Nortel Networks 8000 - Manual (Page 276)

Nortel Secure Router 8000 Series
Configuration -WAN Access 7 LAPB and X.25 configuration
7.8.11 Example for configuring the TCP/IP header compression
Networking requirements
As shown in Figure 7-20, you directly connect two routers.
Figure 7-20 Direct connection of two routers through serial interfaces (X.25)
Serial1/0/0 Serial1/0/0
16.16.16.1/2^- 16.16.16.2/24
Router A Router B
Configuration roadmap
The configuration roadmap is as follows:
1. Configure the link protocol to X.25.
2. Configure the address mapping.
Data preparation
To configure the TCP/IP header compression, you need the following data:
# The X.121 and the IP address of the interface on Router A are 1001 and 16.16.16.1/16.
# The X.121 and the IP address of the interface on Router B are 1002 and 16.16.16.2/16.
Configuration procedures
Step 1 Configure Router A.
# Enter the interface view of Serial 1/0/0.
system-view
[RouterA] interface serial 1/0/0
# Encapsulate X.25 DTE.
[RouterA-Serial1/0/0] link x25 dte ietf
# Configure an X.121 address.
[RouterA-serial1/0/0] x25 x121 1001
# Configure an IP address.
[RouterA-Serial1/0/0] ip address 16.16.16.1 255.255.0.0
# Configure the map multi-protocol.
[RouterA-Serial1/0/0] x25 map ip 16.16.16.2 compressedtcp 16.16.16.2 x121-address 1002
Step 2 Configure Router B.
# Enter the interface view of Serial 1/0/0.
Issue 5.3 (30 March 2009) Nortel Networks Inc. 7-73