236CHAPTER 16: CONFIGURING LAPB AND X.25

Interconnect LANs via Annex G DLCIs

[Router-Serial1]x25 x121-address 3333

[Router-Serial1]ip address 2.1.1.3 255.255.255.0

[Router-Serial1]x25 map ip 1.1.1.1 x121-address 1111

[Router-Serial1]x25 map ip 2.1.1.1 x121-address 1111

[Router-Serial1]x25 map ip 1.1.1.2 x121-address 2222

[Router-Serial1]x25 map ip 2.1.1.2 x121-address 2222

gConfigure the static route to RouterA and RouterB.

[Router]ip route-static 10.1.1.0 24 1.1.1.1

[Router]ip route-static 10.1.1.0 24 2.1.1.1

[Router]ip route-static 10.2.1.0 24 1.1.1.2

[Router]ip route-static 10.2.1.0 24 2.1.1.2

I. Networking Requirements

Two Routers are directly connected via serial interfaces. Router A works as Frame Relay DCE whereas Router B as Frame Relay DTE.

II. Networking Diagram

Figure 77 Interconnect LANs via an Annex G DLCI

IP:202.38.163.251

Router A

Router B

DLCI=100

IP:202.38.163.252

III. Configuration Procedure

1Configure RouterA:

a Create an X.25 template.

[Router]x25 template profile1

bConfigure the local X.25 address.

[Router-x25-profile1]x25 x121-address 10094

cMap the destination X.25 address to the destination IP address.

[Router-x25-profile1]x25 map ip 202.38.163.252 x121-address 20094

[Router-x25-profile1]quit

dConfigure an IP address for the local interface.

[Router]interface serial 1

[Router-Serial1]ip address 202.38.163.251 255.255.255.0

eConfigure the link layer protocol of the interface to Frame Relay.

[Router-Serial1]link-protocol fr

[Router-Serial1]fr interface-type dce

fConfigure a Frame Relay DLCI.

[Router-Serial1]fr dlci 100

gConfigure the DLCI to be Annex G DLCI.

[Router-fr-dlci-100]annexg dce

hAssociate the X.25 template with the DLCI.

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3Com 10014299 manual Configure the static route to RouterA and RouterB, Configure RouterA Create an X.25 template