238 CHAPTER 16: CONFIGURING LAPB AND X.25
II. Networking Diagram
Figure 78 Networking for the SVC application of X.25 over Frame Relay
III. Configuration Procedure
1Configure the router Router A:
aConfigure the basic X.25 parameters.
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte ietf
[Router-Serial0]x25 x121-address 1
[Router-Serial0]x25 map ip 1.1.1.2 x121-address 2
[Router-Serial0]ip address 1.1.1.1 255.0.0.0
2Configure the router Router D:
aConfigure the basic X.25 parameters:
[Router]config
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte ietf
[Router-Serial0]x25 x121-address 2
[Router-Serial0]x25 map ip 1.1.1.1 x121-address 1
[Router-Serial0]ip address 1.1.1.2 255.0.0.0
3Configure the router Router B:
aEnable X.25 switching.
[Router]x25 switching
bEnable switching on Frame Relay DCE.
[Router]fr switching
cConfigure Serial 0 as the X.25 interface.
[Router]interface serial 0
[Router-Serial0]switching x25 dce ietf
dConfigure Serial 1 as the Frame Relay interface.
[Router]interface serial 1
[Router-Serial1]link-protocol frame-relay
[Router-Serial1]fr interface-type dce
eConfigure a Frame Relay Annex G DLCI.
[Router-Serial1]fr dlci 100
[Router-fr-dlci-100]annexg dce
fConfigure local X.25 switching.
PC1
S0
S0
S0
S0
PC2
E0 E0
Router B
Router A
Router C
Router D
S1S1 DLCI100