3Com MSR 50 Series Configuration Manual page 328

328 C 14: X.25
HAPTER AND
LAPB C
ONFIGURATION
[RouterA-Serial2/0] link-protocol x25 dte
[RouterA-Serial2/0] x25 x121-address 1
[RouterA-Serial2/0] x25 map ip 1.1.1.2 x121-address 2
[RouterA-Serial2/0] ip address 1.1.1.1 255.0.0.0
2 Configure Router D
# Configure X.25 basic functions.
<RouterD> system-view
[RouterD] interface serial 2/0
[RouterD-Serial2/0] link-protocol x25 dte
[RouterD-Serial2/0] x25 x121-address 2
[RouterD-Serial2/0] x25 map ip 1.1.1.1 x121-address 1
[RouterD-Serial2/0] ip address 1.1.1.2 255.0.0.0
3 Configure Router B
# Enable X.25 switching.
<RouterB> system-view
[RouterB] x25 switching
# Configure Serial 2/0 as X.25 interface.
[RouterB] interface serial 2/0
[RouterB-Serial2/0] link-protocol x25 dce
# Configure Serial 2/1 as FR interface.
[RouterB] interface serial 2/1
[RouterB-Serial2/1] link-protocol fr
[RouterB-Serial2/1] fr interface-type dce
# Configure the FR Annex G DLCI.
[RouterB-Serial2/1] fr dlci 100
[RouterB-fr-dlci-Serial2/1-100] annexg dce
# Configure X.25 local switching.
[RouterB] x25 switch svc 1 interface serial 2/0
# Configure X.25 over FR switching.
[RouterB] x25 switch svc 2 interface serial 2/1 dlci 100
4 Configure Router C
# Enable X.25 switching.
<RouterC> system-view
[RouterC] x25 switching
# Configure Serial 2/0 as X.25 interface.
[RouterC] interface serial 2/0
[RouterC-Serial2/0] link-protocol x25 dce