EIGRP区域注入静态路由的三种方法--CCNP学习笔记

EIGRP区域注入静态路由的三种方法
拓扑图




R2为外网，R1为边界路由器。R3,R4为内部路由器

基本配置

R2配置：
R2#sh run
Building configuration...

Current configuration : 794 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
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 2.2.2.2 255.255.255.0

!
interface Serial0/0
ip address 12.1.1.2 255.255.255.0

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
!
ip http server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end

R1配置：
R1#sh ru
*Mar 1 00:21:11.123: %SYS-5-CONFIG_I: Configured from console by console

R1#sh ru
R1#sh run
Building configuration...

Current configuration : 1011 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 1.1.1.1 255.255.255.0

!
interface Serial0/0
ip address 12.1.1.1 255.255.255.0

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
redistribute static
network 1.1.1.0 0.0.0.255
network 13.1.1.0 0.0.0.255
no auto-summary

!
ip http server
ip route 0.0.0.0 0.0.0.0 Serial0/0
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end

R3配置
R3#sh running-config
Building configuration...

Current configuration : 922 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 Loopback0
ip address 3.3.3.3 255.255.255.0

!
interface Serial0/0
ip address 35.1.1.3 255.255.255.0

serial restart-delay 0
!
interface Serial0/1
ip address 13.1.1.3 255.255.255.0

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 3.3.3.0 0.0.0.255
network 13.1.1.0 0.0.0.255
network 35.1.1.0 0.0.0.255
no auto-summary

!
ip http server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
end

方法一：
重分布
边界路由上做静态路由，然后重分布到内部路由器和三层交换机

在EIGRP进程中redistribute static

R3上路由表





方法二：
network 0.0.0.0

R1上做默认路由，再宣告network0.0.0.0

与重分布静态路由明显区别在于管理距离，重分布为170，而此方法还是为EIGRP的90
R3的路由表





方法三：
ip default-network

边界路由器上：
全局配置模式下
ip default-network [外网主类地址]

这里是ip default-network 12.0.0.0

进入EIGRP进程配置
network [外网主类地址]
这里是network 12.0.0.0

本地有外网主类路由
配置一条静态路由或者关闭EIGRP的自动汇总
在这里是配置 ip route 12.0.0.0 255.0.0.0 null 0

此方法不需要默认路由
R1的路由表





R3的路由表




注意点：带星号的就是默认路由