[cisco] Fram-replay 交換技術基本

物理拓樸如圖：

邏輯拓樸為

R1-->R2 使用102電路

R1-->R3 使用103電路

R2--> R1使用 201電路

R3-->R1使用301電路

 

1. 使用一台路由器模擬frame-relay交換機

inter s0/0
no ip add 
encap fram-relay
frame-relay intf-type dce
frame-relay route 102 interface s0/1 201
frame-relay route 103 interface s0/2 301
!
inter s0/1
no ip add 
encap fram-relay
frame-relay intf-type dce
frame-relay route 201 interface s0/0 102
!
inter s0/2
no ip add 
encap fram-relay
frame-relay intf-type dce
frame-relay route 301 interface s0/0 103

2. 路由器的介面設定

R1#
interface s1/0
no shutdown
ip add 172.12.123.1 255.255.255.0
encapsulation frame-relay
!點對點至R3
frame-relay map ip 172.12.123.3 103 broadcast
!點對點至R2
frame-relay map ip 172.12.123.2 102 broadcast
no frame-relay inverse-arp

R2#
interface s1/0
no shutdown
ip add 172.12.123.2 255.255.255.0
encapsulation frame-relay
!點對點至R1
frame-relay map ip 172.12.123.1 201 broadcast
no frame-relay inverse-arp

R3#
interface s1/0
no shutdown
ip add 172.12.123.3 255.255.255.0
encapsulation frame-relay
!點對點至R1
frame-relay map ip 172.12.123.1 301 broadcast
no frame-relay inverse-arp

如此就完成一組最簡單的frame-relay交換網路。