Nortel Networks 8000 - Manual (Page 245)

7 LAPB and X.25 configuration
Nortel Secure Router 8000 Series
Configuration -WAN Access
3. Configure the address mapping and other parameters.
Data preparation
To complete the configuration, you need the following data:
# The IP addresses of the interfaces on Router A and Router B are 202.38.160.1/24 and
202.38.160.2/24 respectively.
# The X121 address of the interfaces on Router A and Router B are 20112451 and
20112452 respectively.
# Setting the default maximum length of the received and sent packet to both 1024.
# Setting the size of the receiving and sending window of the VC to both 5.
Configuration procedure
Step 1 Configure Router A.
# Select the interface.
<RouterA> system-view
[RouterA] interface serial1/0/0
# Specify an IP address for this interface.
[RouterA-Serial1/0/0] ip address 202.38.160.1 255.255.255.0
# Configure the link layer protocol of the interface as X.25 and specify its operating mode as
DTE.
[RouterA-Serial1/0/0] link-protocol x25 dte
# Specify an X.121 address for this interface.
[RouterA-Serial1/0/0] x25 x121-address 20112451
# Specify the address mapping heading for the peer.
[RouterA-Serial1/0/0] x25 map ip 202.38.160.2 x121-address 20112452
# As this is a direct connection, the traffic control parameters can be increased slightly.
[RouterA-Serial1/0/0] x25 packet-size 1024 1024
[RouterA-Serial1/0/0] x25 window-size 5 5
[RouterA-Serial1/0/0] shutdown
[RouterA-Serial1/0/0] undo shutdown
Step 2 Configure Router B.
# Select the interface.
<RouterB> system-view
[RouterB] interface serial1/0/0
# Specify an IP address for this interface.
[RouterB-Serial1/0/0] ip address 202.38.160.2 255.255.255.0
# Configure the link layer protocol of the interface as X.25 and specify its operating mode as
DCE.
[RouterB-Serial1/0/0] link-protocol x25 dce
7-42 Nortel Networks Inc. Issue 5.3 (30 March 2009)