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1、帧中继概述和配置帧中继概述和配置 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-1 帧中继概述帧中继概述帧中继概述帧中继概述 帧中继交换机帧中继交换机 帧中继链路帧中继链路 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-2 帧中继虚电路帧中继虚电路帧中继虚电路帧中继虚电路(PVC) 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-3 帧中继术语帧中继术语帧中继术语帧中继术语 2007 Cisco
2、 Systems, Inc. All rights reserved.ICND2 v1.08-4 帧中继地址映射帧中继地址映射帧中继地址映射帧中继地址映射 ? LMI接收来自帧中继交换机在本地有效的DLCI。LMI接收来自帧中继交换机在本地有效的DLCI。 ? 反向反向ARPARP将本地将本地DLCIDLCI映射到远程路由器的映射到远程路由器的IPIP地址地址。 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-5 反向反向ARPARP将本地将本地DLCIDLCI映射到远程路由器的映射到远程路由器的IPIP地址地址。 帧中继信令帧
3、中继信令帧中继信令帧中继信令LMI Cisco 支持三种LMI标准:Cisco 支持三种LMI标准: ? CiscoCisco ? ANSI T1.617 Annex DANSI T1.617 Annex D ? ITITU U-T-T Q.933Q.933 AnnAnne ex Ax A 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-6 U U Q.933Q.933 e e 配置帧中继配置帧中继 动态映射动态映射配置帧中继配置帧中继(动态映射动态映射) 00interface Serial0 no shutdown ip a
4、ddress 10.1.1.2 255.255.255.0 encapsulation frame-relay Ip route 33 1 1 0 255 255 255 0 10 1 1 3 interface Serial0 no shutdown ip address 10.1.1.3 255.255.255.0 encapsulation frame-relay Ip route 22 1 1 0 255 255 255 0 10 1 1 2 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-7 Ip route 33.1
5、.1.0 255.255.255.0 10.1.1.3Ip route 22.1.1.0 255.255.255.0 10.1.1.2 验证帧中继配置验证帧中继配置 在R2上显示有关帧中继DLCI和LMI的信息 R2#show interface serial 0 Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 10.1.1.2/24 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255,
6、 rxload 1/255 Encapsulation FRAME-RELAY, loopback not set Keepalive set (10 sec)eepae set ( 0 sec) LMI enq sent 66, LMI stat recvd 67, LMI upd recvd 0, DTE LMI up LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0 LMI DLCI 1023 LMI type is CISCO frame relay DTE Broadcast queue 0/64, broadcasts sent/dr
7、opped 2/0, interface broadcasts 0 Last input 00:00:09output 00:00:09output hang neverLast input 00:00:09, output 00:00:09, output hang never Last clearing of “show interface“ counters 00:11:09 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: weighted fair Outp
8、ut queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations0/1/256 (active/max active/max total)Conversations 0/1/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1158 kilobits/sec 5 minute input rate 0 bits/sec, 0 packets/sec 5 minu
9、te output rate 0 bits/sec, 0 packets/sec 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-8 验证验证类型类型验证验证LMI类型类型 R1# show frame-relay lmi LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = CISCO Invalid Unnumbered info 0 Invalid Prot Disc 0 Invalid dummy Call Ref 0 Invalid Msg
10、Type 0 Invalid Status Message 0 Invalid Lock Shift 0 Invalid Information ID 0 Invalid Report IE Len 0 Invalid Report Request 0 Invalid Keep IE Len 0 Num Status Enq. Sent 113100 Num Status msgs Rcvd 113100 Num Update Status Rcvd 0 Num Status Timeouts 0 2007 Cisco Systems, Inc. All rights reserved.ICN
11、D2 v1.08-9 验证验证验证验证PVC R2# show frame-relay pvc 203 PVC Statistics for interface Serial0 (Frame Relay DTE) DLCI = 203, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0 input pkts 28 output pkts 10 in bytes 8398 out bytes 1198 dropped pkts 0 in FECN pkts 0 in BECN pkts 0 out FECN pkts 0 o
12、ut BECN pkts 0 in DE pkts 0 out DE pkts 0 out bcast pkts 10 out bcast bytes 1198 pvc create time 00:03:46, last time pvc status changed 00:03:47 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-10 验证帧中继动态映射验证帧中继动态映射验证帧中继动态映射验证帧中继动态映射 显示帧中继动态映射显示帧中继动态映射 R2#show frame-relay map Serial0 (up): i
13、p 10.1.1.3 dlci 203(0xCB,0x30B0), dynamic, broadcast status definedactivebroadcast,status defined, active R2#clear frame-relay inarp 清除使用反向ARP动态创建的帧中继映射 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-11 配置帧中继配置帧中继 静态映射静态映射配置帧中继配置帧中继(静态映射静态映射) S0/0S0/1 S0S0 R110 1 1 2 DLCI:203DLCI:302 DCE E
14、0 E0 R2R3 R1 33.1.1.3 22.1.1.2 10.1.1.2 10.1.1.3DCE DCE PC2PC3 F0/0 F0/0 22.1.1.4 33.1.1.4 interface Serial0 no shutdown ip address 10.1.1.2 255.255.255.0 interface Serial0 no shutdown ip address 10.1.1.3 255.255.255.0 encapsulation frame relay encapsulation frame-relay no frame-relay inverse-arp fr
15、ame-relay map ip 10.1.1.3 203 broadcast Ip route 33.1.1.0 255.255.255.0 10.1.1.3 encapsulation frame-relay no frame-relay inverse-arp frame-relay map ip 10.1.1.2 302 broadcast Ip route 22.1.1.0 255.255.255.0 10.1.1.2 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-12 验证帧中继静态映射验证帧中继静态映射验证帧中继
16、静态映射验证帧中继静态映射 在R2上显示帧中继静态映射 R2#show frame-relay map Serial0 (up): ip 10.1.1.3 dlci 203(0xCB,0x30B0), static, broadcastbroadcast, CISCO, status defined, active 在R3上显示帧中继静态映射 R3#show frame-relay map R3# hfR3#show fram map Serial0 (up): ip 10.1.1.2 dlci 302(0x12E,0x48E0), static, broadcast, CISCO, status defined, active 2007 Cisco Systems, Inc. All rights reserved.ICND2 v1.08-13 配置路由器配置路由器作为帧中继交换机作为帧中继交换机配置路由器配置路由器(R1)作
