1．如上圖所示,中間一臺路由器模擬幀中繼交換機，首先要開啓它的幀中繼交換交換功能
２．在R1/R3/R4上正確配置IP地址，並查看各接口處於開啓狀態
３．在F-R-SW的 S0/0口上做兩條映射表，在F-R-SW的S0/1和S0/2上各做一條映射表
４．Ｒ1/R2/Ｒ３的路由器上都運行RIPV2,要求R1/R2/R3三臺路由器上的迴環口能夠互相通信。
配置步驟：
Router(config)#hos F-R-SW
F-R-SW (config)#frame-relay switching
F-R-SW (config)#int s0/0
F-R-S W(config-if)#encapsulation frame-relay
F-R-SW (config-if)#frame-relay intf-type dce
F-R-SW (config-if)#frame-relay route 103 int s0/1 301
F-R-S W(config-if)#frame-relay route 104 int s0/2 401
F-R-SW (config-if)#no shut
F-R-SW (config)#int s0/1
F-R-SW (config-if)#encapsulation frame-relay
F-R-SW (config-if)#frame-relay intf-type dce
F-R-SW (config-if)#frame-relay lmi-type cisco
F-R-SW (config-if)#frame-relay route 301 int s0/0 103
F-R-SW (config-if)#clock rate 64000
F-R-SW (config-if)#no shut
F-R-SW (config)#int s0/2
F-R-SW (config-if)#encapsulation frame-relay
F-R-SW (config-if)#frame-relay intf-type dce
F-R-SW (config-if)#frame-relay lmi-type cisco
F-R-SW (config-if)#frame-relay route 401 int s0/0 104
F-R-SW (config-if)#clock rate 64000
F-R-SW (config-if)#no shut
Router(config)#hos r1
r1(config)#int s0/0
r1(config-if)#encapsulation frame-relay
r1(config-if)#ip add 192.168.1.1 255.255.255.0
r1(config-if)#frame-relay map ip 192.168.1.3 103 br
r1(config-if)#frame-relay map ip 192.168.1.4 104 br
r1(config-if)#no shut
r1(config)#int lo0
r1(config-if)#ip add 1.1.1 .1 255.255.255.0
r1(config-if)#router rip
r1(config-if)# version 2
r1(config-router)#net 192.168.1.0
r1(config-router)#net 1.1.1 .0
Router(config)#host r3
r3(config)#int s0/1
r3(config-if)#encapsulation frame-relay
r3(config-if)#ip add 192.168.1.3 255.255.255.0
r3(config-if)#frame-relay map ip 192.168.1.1 301 br
r3(config-if)#frame-relay map ip 192.168.1.4 301 br
r3(config-if)#no shut
r3(config)#int lo0
r3(config-if)#ip add 3.3.3 .3 255.255.255.0
r3(config-if)#router rip
r3(config-if)# version 2
r3(config-router)#net 192.168.1.0
r3(config-router)#net 3.3.3 .0