实验拓扑图如下:图中路由器及帧中继交换机均由3640实现,三个路由器都用S0/0跟FRsw相连R1 s0/0 ip 192.168.1.1 /24 R2 s0/0 ip 192.168.1.2 /24 R3 s0/0 ip 192.168.1.3 /24 先对FR交换机进行配置----FRswFRsw(config)#frame-relay switching 开启帧中继交换功能 FRsw(config)#interface s0/0 FRsw(config-if)#no shutdown FRsw(config-if)#no ip address 关闭接口IP地址 FRsw(config-if)#encapsulation frame-relay 封闭帧中继 FRsw(config-if)#frame-relay lmi-type cisco配置LMI类型 FRsw(config-if)#frame-relay intf-type dce配置接口类型 FRsw(config-if)#clock rate 64000 配置时钟频率 FRsw(config-if)#frame-relay route 102 interface s0/1 201 FRsw(config-if)#frame-relay route 103 interface s0/2 301 配置该本地端口DLCI值及虚链路对应出口和对端DLCI值FRsw(config-if)#exit-------------------------------语句说明参考S0/0接口配置FRsw(config)#interface s0/1 FRsw(config-if)#no shutdown FRsw(config-if)#no ip address FRsw(config-if)#encapsulation frame-relay FRsw(config-if)#frame-relay lmi-type cisco FRsw(config-if)#frame-relay intf-type dce FRsw(config-if)#clock rate 64000 FRsw(config-if)#frame-relay route 201 interface s0/0 102 FRsw(config-if)#frame-relay route 203 interface s0/2 302 FRsw(config-if)#exit-------------------------------语句说明参考S0/0接口配置FRsw(config)#interface s0/2 FRsw(config-if)#no shutdown FRsw(config-if)#no ip address FRsw(config-if)#encapsulation frame-relay FRsw(config-if)#frame-relay lmi-type cisco FRsw(config-if)#frame-relay intf-type dce FRsw(config-if)#clock rate 64000 FRsw(config-if)#frame-relay route 301 interface s0/0 103 FRsw(config-if)#frame-relay route 302 interface s0/1 203 FRsw(config-if)#exit查看PVC链路状态#show frame-relay route由于串行链路上的对端还未进行配置及联接,PVC链路还处于未激活状态.下面进行DTE端路由器配置----R1R1(config)#interface s0/0 R1(config-if)#ip address 192.168.1.1 255.255.255.0 R1(config-if)#no shutdown R1(config-if)#encapsulation frame-relay 接口封装帧中继 R1(config-if)#no frame-relay inverse-arp关闭反向ARP R1(config-if)#frame-relay map ip 192.168.1.2 102 broadcast R1(config-if)#frame-relay map ip 192.168.1.3 103 broadcast 配置对端IP与本地DLCI映射----R2(语句说明参考R1)R2(config)#interface s0/0 R2(config-if)#ip address 192.168.1.2 255.255.255.0 R2(config-if)#no shutdown R2(config-if)#encapsulation frame-relay R2(config-if)#no frame-relay inverse-arp R2(config-if)#frame-relay map ip 192.168.1.1 201 broadcast R2(config-if)#frame-relay map ip 192.168.1.3 203 broadcast ----R3(语句说明参考R1)R3(config)#interface s0/0 R3(config-if)#ip address 192.168.1.3 255.255.255.0 R3(config-if)#no shutdown R3(config-if)#encapsulation frame-relay R3(config-if)#no frame-relay inverse-arp R3(config-if)#frame-relay map ip 192.168.1.1 301 broadcast R3(config-if)#frame-relay map ip 192.168.1.2 302 broadcast 再次查看FRsw的状态#show frame-relay route 所有PVC链路已经全部处于激活状态 试验联通性,在R1上分别ping R2和R3的S0/0口IP地址 R2 ping R3