双ISP接入方案设计

interface FastEthernet0/0 
description *** Internet *** 
ip address 218.15.164.100 255.255.255.224 
ip nat outside 
duplex auto 
speed auto 
! 
interface FastEthernet0/1 
description *** Cernet *** 
ip address 125.89.154.130 255.255.255.252 
ip nat outside 
duplex auto 
speed auto 
! 
interface Ethernet1/0 
description *** Lan *** 
ip address 192.168.254.1 255.255.240.0 
ip nat inside 
ip policy route-map isp 
full-duplex 
! 
ip nat inside source list 1 interface FastEthernet0/0 overload 
ip nat inside source list 2 interface FastEthernet0/1 overload 
ip classless 
ip route 192.168.0.0 255.255.0.0 192.168.254.2 
no ip http server 
! 
access-list 1 permit any 
access-list 2 permit any

access-list 101 permit ip any 218.15.164.96 0.0.0.31 
access-list 101 permit ip any 125.59.154.128 0.0.0.3

教育网的IP 
access-list 110 permit ip any 203.91.120.0 0.0.7.255 
access-list 110 permit ip any 202.38.192.0 0.0.63.255 
access-list 110 permit ip any 121.248.0.0 0.3.255.255 
........... 
........

access-list 120 permit ip any any 
route-map isp deny 5 
match ip address 101 
! 
route-map isp permit 10 
match ip address 110 
set ip next-hop 教育网网关 电信网关 
! 
route-map isp permit 20 
match ip address 120 
set ip next-hop 电信网关 教育网网关

本文转自 gehailong 51CTO博客，原文链接：http://blog.51cto.com/gehailong/301139，如需转载请自行联系原作者