网络工程师交换试验手册之十二:帧中继网络模型
实验目的: 了解帧中继的基本配置过程,理解帧中继的基本工作过程和原理。 实验拓扑: ![]() 实验内容: 1.配置点到多点帧中继 R3上的帧中继配置: R3(config)#int s1 R3(config-if)#ip add 192.168.10.3 255.255.255.0 R3(config-if)#en fr R3(config-if)#no fr inv R3(config-if)#fr map ip 192.168.10.3 102 bro R3(config-if)#fr map ip 192.168.10.4 102 bro R3(config-if)#fr map ip 192.168.10.5 103 bro R3(config-if)#no shut R4上的帧中继配置: R4(config)#int s0 R4(config-if)#ip add 192.168.10.4 255.255.255.0 R4(config-if)#en fr R4(config-if)#no fr inv R4(config-if)#fr map ip 192.168.10.3 201 bro R4(config-if)#fr map ip 192.168.10.4 201 bro R4(config-if)#fr map ip 192.168.10.5 201 bro R3(config-if)#no shut R5上的帧中继配置: R5(config)#int s0 R5(config-if)#ip add 192.168.10.5 255.255.255.0 R5(config-if)#en fr R5(config-if)#no fr inv R5(config-if)#fr map ip 192.168.10.3 301 bro R5(config-if)#fr map ip 192.168.10.4 301 bro R5(config-if)#fr map ip 192.168.10.5 301 bro R5(config-if)#no shut 2.查看帧中继配置 R3上查看: R3#show fr map Serial1 (up): ip 192.168.10.3 dlci 102(0x66,0x1860), static, broadcast, CISCO, status defined, active Serial1 (up): ip 192.168.10.4 dlci 102(0x66,0x1860), static, broadcast, CISCO, status defined, active Serial1 (up): ip 192.168.10.5 dlci 103(0x67,0x1870), static, broadcast, CISCO, status defined, active R3#show fr pvc PVC Statistics for interface Serial1 (Frame Relay DTE) Active Inactive Deleted Static Local 2 0 0 0 Switched 0 0 0 0 Unused 0 1 0 0 DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1 input pkts 0 output pkts 0 in bytes 0 out bytes 0 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 0 out bcast bytes 0 pvc create time 00:08:05, last time pvc status changed 00:03:34 DLCI = 103, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1 input pkts 0 output pkts 0 in bytes 0 out bytes 0 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 0 out bcast bytes 0 pvc create time 00:08:02, last time pvc status changed 00:04:05 R4上查看: R4#show fr map Serial0 (up): ip 192.168.10.3 dlci 201(0xC9,0x3090), static, broadcast, CISCO, status defined, active Serial0 (up): ip 192.168.10.4 dlci 201(0xC9,0x3090), static, broadcast, CISCO, status defined, active Serial0 (up): ip 192.168.10.5 dlci 201(0xC9,0x3090), static, broadcast, CISCO, status defined, active R4#show fr pvc PVC Statistics for interface Serial0 (Frame Relay DTE) Active Inactive Deleted Static Local 1 0 0 0 Switched 0 0 0 0 Unused 0 0 0 0 DLCI = 201, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts 0 output pkts 0 in bytes 0 out bytes 0 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 0 out bcast bytes 0 pvc create time 00:05:56, last time pvc status changed 00:02:43 R5上查看: R5#show fr map Serial0 (up): ip 192.168.10.3 dlci 301(0x12D,0x48D0), static, broadcast, CISCO, status defined, active Serial0 (up): ip 192.168.10.4 dlci 301(0x12D,0x48D0), static, broadcast, CISCO, status defined, active Serial0 (up): ip 192.168.10.5 dlci 301(0x12D,0x48D0), static, broadcast, CISCO, status defined, active R5#show fr pvc PVC Statistics for interface Serial0 (Frame Relay DTE) Active Inactive Deleted Static Local 1 0 0 0 Switched 0 0 0 0 Unused 0 0 0 0 DLCI = 301, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts 0 output pkts 0 in bytes 0 out bytes 0 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 out BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 0 out bcast bytes 0 pvc create time 00:04:06, last time pvc status changed 00:02:40 3.测试线路连同性: R1上PING: R3#ping 192.168.10.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.10.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 112/116/124 ms R3#ping 192.168.10.4 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.10.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 112/116/124 ms R3#ping 192.168.10.5 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.10.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 112/116/124 ms 实验总结:帧中继链路的配置基本上分3步:1 本文出自 51CTO.COM技术博客 |



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