Typical X.25 Configuration Example 239

[Router]x25 switch svc 1 interface serial 0

gConfigure X.25 over Frame Relay switching.

[Router]x25 switch svc 2 interface serial 1 dlci 100

4Configure the router Router C:

aEnable X.25 switching.

[Router]x25 switching

bConfigure Serial 0 as the X.25 interface.

[Router]interface serial 0

[Router-Serial0]link-protocol x25 dce ietf

cConfigure Serial 1 as the Frame Relay interface.

[Router]interface serial 1

[Router-Serial1]link-protocol fr

dConfigure the Frame Relay Annex G DLCI.

[Router-Serial1]fr dlci 100

eConfigure local X.25 switching.[Router-fr-dlci-100]annexg dte

[Router]x25 switch svc 2 interface serial 0

fConfigure X.25 over Frame Relay switching.

PVC Application of X.25 over Frame Relay

[Router]x25 switch svc 1 interface serial 1 dlci 100

I. Networking Requirements

RouterA and RouterC are respectively connected to RouterB and RouterD through X.25. RouterB and RouterC are connected through Frame Relay. Configure Frame Relay Annex G DLCI 100 on both RouterB and RouterC to set up an X.25 PVC to interconnect the two X.25 networks. Thereby, PC1 and PC2 can access each other.

II. Networking Diagram

Figure 79 Networking for the PVC application of X.25 over Frame Relay

S1

 

DLCI100

 

S1

 

 

 

 

S0

 

 

S0

 

Router B

 

 

Router C

 

S0

 

 

S0

E0

Router A

 

E0

Router D

 

 

 

PC1

 

 

 

PC2

III. Configuration Procedure

1Configure Router A:

a Configure the basic X.25 parameters.

[Router]interface serial 0

[Router-Serial0]switch svc x25 dte ietf

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3Com 10014299 manual Configure X.25 over Frame Relay switching, Configure the router Router C Enable X.25 switching