CCNA配置试验之三 EIGRP协议的配置

简介:
EIGRP 协议概述
EIGRP是最典型的平衡混合路由选择协议,它融合了距离
矢量和链路状态两种路由选择协议的优点,使用闪速更新
算法,能最快的达到网络收敛(convergence
 
EIGRP特点如下:
          采用不定期更新,即只在路由器改变计量标准或拓扑出
       现变化时发送部分更新路由
          更新条目中包含掩码,支持VLSM,支持不连续子网
          具有相同的自治系统号的EIGRPIGRP之间,
    可无缝交换路由信息
 
EIGRP主要功能
           通过协议相关模块支持IP,IPX,AppleTalk
           无类
           支持VLSMCIDR
           支持概要和不练许网络
           有效邻居发现
           基于可靠传输协议(RTP)的通信
           基于弥散更新算法(DUAL)的最佳路径的选择
路由发现和维护
 
三表:
            邻居关系表:以建立的邻居关系
            拓扑表:互联网中每个路由器从每个邻居         接受到的路由通告
            路由表:当前使用的用于路由判断的路由度量:0带宽1,延迟,负载,可靠性,最大传输单   
 
配置 EIGRP
 
Router(config)#router eigrp {as-number}
启动EIGRP
Router(config-router)#network {network-number
宣告直连主类网络号
 
用试验验证EIGRP的配置。
试验环境介绍
R1 ip 地址为  192.168.1.1  S0/0       网络掩码为  255.255.255.0
R2 ip 地址为  192.168.1.2  S0/0  192.168.2.1   S0/1 )网络掩码为  255.255.255.0
R3 ip 地址为  192.168.2.2  S0/1       网络掩码为  255.255.255.0
R1 S0/0 端口和 R2 S0/1 端口为 DCE 端口
AS 号为 100
 
试验目的,通过在路由器间配置 EIGRP 协议,使路由器间能相互通讯,实现全网全通
下面分别是在 R1 R2 R3 上的配置。 ( 红色字体为配置内容 )
R1
Router>en
Router#conf t
Enter configuration commands, .e per line.  End with CNTL/Z.
Router(config)#host r1
r1(config)#int s0/0
r1(config-if)#ip addr 192.168.1.1 255.255.255.0
r1(config-if)#clock rate 64000
r1(config-if)#no shut
r1(config-if)#exit
r1(config)#router eigrp 100
r1(config-router)#network 192.168.1.0
R2
Router>en
Router#conf t
Enter configuration commands, .e per line.  End with CNTL/Z.
Router(config)#host r2
r2(config)#int s0/0
r2(config-if)#ip addr 192.168.1.2 255.255.255.0
r2(config-if)#no shut
r2(config-if)#exit
r2(config)#int s0/1
r2(config-if)#ip addr 192.168.2.1 255.255.255.0
r2(config-if)#clock rate 64000
r2(config-if)#no shut
r2(config-if)#exit
r2(config)#router eigrp 100
r2(config-router)#network 192.168.1.0
r2(config-router)#network 192.168.2.0
R3
Router>en
Router#conf t
Enter configuration commands, .e per line.  End with CNTL/Z.
Router(config)#host r3
r3(config)#int s0/1
r3(config-if)#ip addr 192.168.2.2 255.255.255.0
r3(config-if)#no shut
r3(config-if)#exit
r3(config)#router eigrp 100
r3(config-router)#network 192.168.2.0
 
如下是在路由器 R1 上分别 ping R2 R3 的信息,
试验证明 R1 R2 R3 已经实现全网全通。
 
r1#ping 192.168.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 144/445/576 ms
r1#ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 364/788/1224 ms
r1#ping 192.168.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 720/1085/1412 ms
 
  如下是在路由器 R1 R2 R3 上查看路由协议。结果表明, R1 R2 R3 之间是通过 Eigrp  实现全网全通的
 
R1
 
r1#show ip protocols
Routing Protocol is "eigrp 100"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
  EIGRP maximum hopcount 100
  EIGRP maximum metric variance 1
  Redistributing: eigrp 100
  EIGRP NSF-aware route hold timer is 240s
  Automatic network summarization is in effect
  Maximum path: 4
  Routing for Networks:
    192.168.1.0
  Routing Information Sources:
    Gateway         Distance      Last Update
    192.168.1.2           90      00:04:24
  Distance: internal 90 external 170
 
R2
 
r2>show ip protocols
Routing Protocol is "eigrp 100"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
  EIGRP maximum hopcount 100
  EIGRP maximum metric variance 1
  Redistributing: eigrp 100
  EIGRP NSF-aware route hold timer is 240s
  Automatic network summarization is in effect
  Automatic address summarization:
    192.168.1.0/24 for Serial0/1
  Maximum path: 4
  Routing for Networks:
    192.168.1.0
    192.168.2.0
  Routing Information Sources:
    Gateway         Distance      Last Update
    192.168.2.2           90      00:00:05
  Distance: internal 90 external 170
 
 
R3
 
r3#show ip protocols
Routing Protocol is "eigrp 100"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
  EIGRP maximum hopcount 100
  EIGRP maximum metric variance 1
  Redistributing: eigrp 100
  EIGRP NSF-aware route hold timer is 240s
  Automatic network summarization is in effect
  Maximum path: 4
  Routing for Networks:
    192.168.2.0
  Routing Information Sources:
    Gateway         Distance      Last Update
    192.168.2.1           90      00:00:44
  Distance: internal 90 external 170
OK ,试验成功啦!
 
下面是一些验证命令 :
Show ip eigrp neighbors  用于显示运行 eigrp 路由协议的邻居关系
Show ip eigrp toplogy    显示 eigrp  路由协议的拓扑表
Show ip route eigrp      显示 eigrp  路由协议的路由表
Show ip eigrp traffic      显示 eigrp 协议数据包的通讯状态









本文转自 范琳琳 51CTO博客,原文链接:http://blog.51cto.com/fanlinlin/132487,如需转载请自行联系原作者
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