EIGRP带宽实例配置

EIGRP路由信息在默认情况下占用接口带宽的50%，而串行接口默认的带宽为T1(1.544M)，但在实际上串行接口的带宽并不是默认值，这里我们按照需求修改接口的带宽并修改EIGRP 占用带宽的百分比例。拓扑图如下：

　　修改带宽占用比：

R1(config)# interface s0/0

R1(config-if)# bandwidth 128 //注意，这里的单位是KB/s

R1(config-if)# ip bandwidth-percent eigrp 100 40 //修改EIGRP 路由信息占用带宽的百分比为40

R1(config-if)# end

R2(config)# interface s0/0

R2(config-if)# bandwidth 64 //注意，这里的单位是KB/s

R2(config-if)# end

R3(config)# interface s0/0

R3(config-if)# bandwidth 64 //注意，这里的单位是KB/s

R3(config-if)# end

　　验证：

R1#show interfaces serial 0/0 | include BW

MTU 1500 bytes, BW 128 Kbit, DLY 20000 usec,

EIGRP 在帧中继网络中使用点对点子接口的方式。第4 步配置中，可以看到R2 和R3 想要通过R1 学习到对方宣告的网络，必须将R1 的接口S0/0 水平分割关闭才可以。这里我们使用帧中继网络点对点子接口的.方法来完成。

点对点子接口方式：

R1(config)#default interface Serial 0/0　//将接口的配置还原为默认值

Building configuration…

Interface Serial0/0 set to default configuration

R1(config)#

*Mar 1 01:45:30.363: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is resync: split horizon changed

*Mar 1 01:45:30.367: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is resync: split horizon changed

*Mar 1 01:45:30.779: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is down: interface down

*Mar 1 01:45:30.787: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is down: interface down

*Mar 1 01:45:31.483: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to down

*Mar 1 01:45:33.499: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up

R1(config)#interface Serial 0/0

R1(config-if)#encapsulation fram 　//封装为帧中继模式

R1(config-if)#no fram inv //关闭自动获取

R1(config-if)#no sh

R1(config-if)#ip split eigrp 100 //打开水平分割

R1(config-if)#int s0/0.1 point //设置点对点子接口

R1(config-subif)#ip add

R1(config-subif)#fram interface-dlci 102 //指定接口DLCI 号

R1(config-fr-dlci)#int s0/0.2 point //配置R1 和R3 之间的子接口

R1(config-subif)#ip add

R1(config-subif)#fram interface-dlci 103

*Mar 1 01:47:05.767: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0.1) is up: new adjacency

*Mar 1 01:47:06.651: IP-EIGRP(Default-IP-Routing-Table:100): Neighbor not on common subnet for Serial0/0.2

R1(config-fr-dlci)#end

因为R1 和R2 相连的子接口IP 地址和子网掩码有所变化必须修改

R2(config)#int s0/0

R2(config-if)#ip add

因为R1 和R3 相连的子接口IP 地址和子网掩码有所变化必须修改

R3(config)#int s0/0

R3(config-if)#ip add

*Mar 1 01:47:51.331: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is down: address changed

*Mar 1 01:47:51.343: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is down: address changed

*Mar 1 01:47:52.463: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor (Serial0/0) is up: new adjacency

R3(config-if)#no frame-relay map ip 301 broadcas //将之前配置的取消

R3(config-if)#fram map ip 301 br

　　验证配置：

R1#show ip eigrp neighbors

IP-EIGRP neighbors for process 100

H Address Interface Hold Uptime SRTT RTO Q Seq

(sec) (ms) Cnt Num

1 Se0/0.2 173 00:06:53 117 1053 0 15

0 Se0/0.1 135 00:07:12 1055 5000 0 16

R3#ping

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to , timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 20/89/180 ms