User manual

7 LAPB and X.25 configuration
Nortel Secure Router 8000 Series
Configuration -WAN Access
7-46 Nortel Networks Inc. Issue 5.3 (
30 March 2009)
[RouterA-Serial1/0/0] x25 window-size 5 5
[RouterA-Serial1/0/0] x25 packet-size 512 512
[RouterA-Serial1/0/0] x25 vc-range bi-channel 1 32
[RouterA-Serial1/0/0] x25 map ip 168.173.24.2 x121-address 30561002
[RouterA-Serial1/0/0] x25 map ip 168.173.24.3 x121-address 30561003
[RouterA-Serial1/0/0] shutdown
[RouterA-Serial1/0/0] undo shutdown
Step 2 Configure Router B.
# Configure an IP address for the interface.
<RouterB> system-view
[RouterB] interface Serial 1/0/0
[RouterB-Serial1/0/0] ip address 168.173.24.2 255.255.255.0
# Connect Router B to the public packet network and make the router serve as DTE side.
[RouterB-Serial1/0/0] link-protocol x25 dte
[RouterB-Serial1/0/0] x25 x121-address 30561002
[RouterB-Serial1/0/0] x25 window-size 5 5
[RouterB-Serial1/0/0] x25 packet-size 512 512
[RouterB-Serial1/0/0] x25 vc-range bi-channel 1 32
[RouterB-Serial1/0/0] x25 map ip 168.173.24.1 x121-address 30561001
[RouterB-Serial1/0/0] x25 map ip 168.173.24.3 x121-address 30561003
[RouterB-Serial1/0/0] shutdown
[RouterB-Serial1/0/0] undo shutdown
Step 3 Configure Router C.
# Configure an IP address for the interface.
<RouterC> system-view
[RouterC] interface Serial 1/0/0
[RouterC-Serial1/0/0] ip address 168.173.24.3 255.255.255.0
# Connect Router C to the public packet network and make the router serve as DTE side.
[RouterC-Serial1/0/0] link-protocol x25 dte
[RouterC-Serial1/0/0] x25 x121-address 30561003
[RouterC-Serial1/0/0] x25 window-size 5 5
[RouterC-Serial1/0/0] x25 packet-size 512 512
[RouterC-Serial1/0/0] x25 vc-range bi-channel 1 32
[RouterC-Serial1/0/0] x25 map ip 168.173.24.1 x121-address 30561001
[RouterC-Serial1/0/0] x25 map ip 168.173.24.2 x121-address 30561002
[RouterC-Serial1/0/0] shutdown
[RouterC-Serial1/0/0] undo shutdown
Step 4 Verify the configuration.
The three routers can ping through each other.
# Display the mapping information on Router A.
[RouterA] display x25 map
Interface: Serial6/0/0(protocol status is UP)
Ip address:ip 168.173.24.2 X.121 address:30561002
Map-type: SVC_MAP VC-number: 1
Facility:
Ip address:ip 168.173.24.3 X.121 address:30561003