Cisco IOS Cookbook 中文精简版第十章 帧中继

10.1. 使用点对点子接口的方式配置帧中继

提问 每个PVC归属特定子接口的方式来配置帧中继

回答

中心配置

Central#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Central(config)#interface Serial0

Central(config-if)#description Frame-Relay host circuit

Central(config-if)#no ip address

Central(config-if)#encapsulation frame-relay

Central(config-if)#exit

Central(config)#interface Serial0.1 point-to-point

Central(config-subif)#description PVC to first branch - DLCI 101

Central(config-subif)#ip address 192.168.1.5 255.255.255.252

Central(config-subif)#frame-relay interface-dlci 101

Central(config-fr-dlci)#exit

Central(config-subif)#exit

Central(config)#interface Serial0.2 point-to-point

Central(config-subif)#description PVC to second branch - DLCI 102

Central(config-subif)#ip address 192.168.1.9 255.255.255.252

Central(config-subif)#frame-relay interface-dlci 102

Central(config-fr-dlci)#exit

Central(config-subif)#exit

Central(config)#end

Central#

边缘配置

Branch1#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Branch1(config)#interface Serial0

Branch1(config-if)#description Frame-Relay circuit

Branch1(config-if)#no ip address

Branch1(config-if)#encapsulation frame-relay

Branch1(config-if)#exit

Branch1(config)#interface Serial0.1 point-to-point

Branch1(config-subif)#description PVC to Central host - DLCI 50

Branch1(config-subif)#ip address 192.168.1.6 255.255.255.252

Branch1(config-subif)#frame-relay interface-dlci 50

Branch1(config-fr-dlci)#exit

Branch1(config-if)#exit

Branch1(config)#end

Branch1#

注释 点对点子接口方式应该是最简单的一种帧中继配置方式了。对于互联非思科设备时候可能需要人工指定包封装格式为标准的IETF格式(RFC1490),可以在接口下配置encapsulation frame-relay ietf 或者在子接口下配置frame-relay interface-dlci