第1段:配置从1点到2点的帧中继环境 version 12.1 service timestamps debug uptime service timestamps log uptime no service passWord-encryption ! hostname FR_Switch ip subnet-zero no ip domain-lookup frame-relay switching ! interface Serial0 no ip address shutdown ! interface Serial 1 no ip address encapsiilation frame-relay clockrate 64000 frame-relay lmi-type cisco frame-relay intf-type dee frame-relay route 102 interface Serial2 201 frame-relay route 103 interface SeriaB 301 ! interface Serial2 no ip address encapsulation frame-relay clockrate 64000 frame-relay lmi-type cisco frame-relay intf-type dee frame-relay route 201 interface Seriall 102 ! interface Serial3 no ip address encapsulation frame-relay clockrate 64000 frame-relay Imi-type cisco frame-relay intf-type dee frame-relay route 301 interface Seriall 103 ! line con 0 line aux 0 transport input all line vty 04 login ! end 第2段:查看有关信息 fR_Switch#sh fr route Input Intf Input Dici Output Intf Output Dici Status Serial1 102 Serial2 201 inactive Serial1 103 Serial2 301 inactive Serial2 201 Serial1 102 inactive Serial3 301 Serial1 103 inactive