实验 不写路由的情况下使用策略路由实现跨网段通信

目的：1.1.1.1和4.4.4.4互相通信

要求：R2，R3不能配置路由和NAT
R1=======================================

int lo 0

ip add 1.1.1.1 255.255.255.255
int f0/0

no sh

int f0/0.12

en do 12

ip add 12.1.1.1 255.255.255.0
ip route 4.4.4.4 255.255.255.255 12.1.1.2
R2============================================
int f0/0

no sh

int f0/0.12

en do 12

ip add 12.1.1.2 255.255.255.0

ip policy route-map A
int f0/0.23

en do 23

ip add 23.1.1.2 255.255.255.0

ip policy route-map B
access-list 1 permit 1.1.1.1

access-list 4 permit 4.4.4.4
route-map A permit 10

match ip address 1

set ip next-hop 23.1.1.3
route-map B permit 10

mat ip add 4

set ip next-hop 12.1.1.1
R3===========================================
int f0/0

no sh

int f0/0.23

en do 23

ip add 23.1.1.3 255.255.255.0

ip policy route-map A
int f0/0.34

en do 34

ip add 34.1.1.3 255.255.255.0

ip policy route-map B
access-list 1 permit 1.1.1.1

access-list 4 permit 4.4.4.4
route-map A permit 10

mat ip addres 1

set ip next-hop 34.1.1.4
route-map B permit 10

mat ip add 4

set ip next-hop 23.1.1.2
R4==============================================

int lo 0

ip add 4.4.4.4 255.255.255.255
int f0/0

no sh

int f0/0.34

en do 34

ip add 34.1.1.4 255.255.255.0
ip route 1.1.1.1 255.255.255.255 34.1.1.3本文出自 “REX_IT_Lab” 博客，请务必保留此出处http://rexiou.blog.51cto.com/4582129/801389