EIGRP路由汇总--CCNP学习笔记

 EIGRP路由汇总

拓扑图
 

EIGRP路由汇总--CCNP学习笔记

在R1上建立若干条明细路由

192.168.1.1/24
192.168.2.1/24
192.168.3.1/24
 
4个要点
在路由传播方向出接口配置
产生null0???这点不是很清楚
所有明细路由down了才删除汇总路由
metric值取明细路由中最小的值
 
基本配置
R1配置
R1#sh running-config
Building configuration...
 
Current configuration : 1018 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
enable password cisco
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!!
!
interface Loopback0

 ip address 192.168.1.1 255.255.255.0

!
interface Loopback1

 ip address 192.168.2.1 255.255.255.0

!
interface Loopback2

 ip address 192.168.3.1 255.255.255.0

!
interface Serial0/0

 no ip address

 shutdown
 serial restart-delay 0
!
interface Serial0/1

 ip address 13.1.1.1 255.255.255.0

 serial restart-delay 0
!
interface Serial0/2

 no ip address

 shutdown
 serial restart-delay 0
!
interface Serial0/3

 no ip address

 shutdown
 serial restart-delay 0
!
router eigrp 90
 network 13.1.1.0 0.0.0.255
 network 192.168.0.0 0.0.255.255
 auto-summary
!
ip http server
!
!
control-plane
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 login
!
!
end
R3配置
R3#sh running-config
Building configuration...
 
Current configuration : 879 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec

no service password-encryption

!

hostname R3

!
boot-start-marker
boot-end-marker
!

enable password cisco

!

no aaa new-model

memory-size iomem 5

!
!
ip cef

no ip domain lookup

!

interface Serial0/0

 ip address 35.1.1.5 255.255.255.0
 serial restart-delay 0
 clock rate 64000
!

interface Serial0/1

 ip address 13.1.1.3 255.255.255.0
 serial restart-delay 0
 clock rate 64000
!

interface Serial0/2

 no ip address
 shutdown
 serial restart-delay 0
!

interface Serial0/3

 no ip address
 shutdown
 serial restart-delay 0
!

router eigrp 90

 network 13.1.1.0 0.0.0.255
 network 35.1.1.0 0.0.0.255
 auto-summary
!

ip http server

 
!        
!
control-plane
!

line con 0

 exec-timeout 0 0
 logging synchronous

line aux 0

line vty 0 4

 login
!
!
end
R5配置
R5#sh running-config
Building configuration...
 
Current configuration : 805 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
boot-start-marker
boot-end-marker
!
enable password cisco
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
interface Serial0/0

 ip address 35.1.1.5 255.255.255.0

 serial restart-delay 0
!
interface Serial0/1

 no ip address

 shutdown
 serial restart-delay 0
!
interface Serial0/2

 no ip address

 shutdown
 serial restart-delay 0
!
interface Serial0/3

 no ip address

 shutdown
 serial restart-delay 0
!
router eigrp 90
 network 35.1.1.0 0.0.0.255
 auto-summary
!
ip http server
!
control-plane
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 login
!
!
end
 
手工汇总
首先计算汇总的IP地址和子网掩码
需要汇总的是
192.168.1.1/24
192.168.2.1/24
192.168.3.1/24
将第三个字节提取出来,转换成二进制
00000001为1
00000010为2
00000011为3
提取前6字节为子网号,即192.168.0.0/22
 
然后进入R1的S0/1 针对S0/1通告手工汇总后的路由

ip summary-address eigrp 90 192.168.0.0 255.255.252.0

 
R1的路由表
手工汇总前

 

EIGRP路由汇总--CCNP学习笔记

手工汇总后

 

EIGRP路由汇总--CCNP学习笔记

R3的路由表
手工汇总前

 

EIGRP路由汇总--CCNP学习笔记

手工汇总后

 

EIGRP路由汇总--CCNP学习笔记

无论手工还是自动汇总后管理距离都为5

本文转自lustlost 51CTO博客,原文链接:http://blog.51cto.com/lustlost/770590,如需转载请自行联系原作者
上一篇:MySQL查询语句中的IN 和Exists 对比分析


下一篇:WebADI_配置设定06_设定显示WebADI Layout(案例)