CCNA配置试验之三 EIGRP协议的配置

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EIGRP 和IGRP 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VLSM 和CIDR • 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 元 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的ip地址为 192.168.1.1 （S0/0） 网络掩码为 255.255.255.0 R2的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的ip地址为 192.168.2.2 （S0/1） 网络掩码为 255.255.255.0 R1的S0/0端口和R2的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 本文出自 “ 范琳琳学习笔记” 博客，请务必保留此出处 http://fanlinlin.blog.51cto.com/535085/132487 本文出自 51CTO.COM技术博客 本文出自 51CTO.COM技术博客