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Typical X.25 Configuration Example 229
II. Networking Diagram
Figure 72 Diagram of X.25 sub-interface configuration
III. Configuration Procedure
1 Configure Router A:
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 100
[Router-Serial0]interface serial 0.1
a Create sub-interface serial 0.1
[Router-Serial0.1]ip address 10.1.1.2 255.255.0.0
[Router-Serial0.1]x25 map ip 10.1.1.1 x121-address 200
b Create sub-interface serial 0.2
[Router-Serial0.1]interface serial 0.2
[Router-Serial0.2]ip address 20.1.1.2 255.255.0.0
[Router-Serial0.2]x25 map ip 20.1.1.1 x121-address 300
2 Configure Router B:
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 200
[Router-Serial0]x25 map ip 10.1.1.2 x121-address 100
3 Configure Router C:
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 300
[Router-Serial0]x25 map ip 20.1.1.2 x121-address 100
4 Configure Router D:
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dce
[Router-Serial0]interface serial 1
[Router-Serial1]link-protocol x25 dce
[Router-Serial1]interface serial 2
[Router-Serial2]link-protocol x25 dce
[Router-Serial2]quit
[Router]x25 switching
[Router]x25 switch svc 100 interface serial 0
[Router]x25 switch svc 200 interface serial 1
[Router]x25 switch svc 300 interface serial 2
S0
S0
S0
S0
S2
RouterB
RouterC
RouterD
RouterA
S1