使用ospf协议的ISP双线冗余路由器配置方法和命令行

R1、R2、R6组成外网使用ospf协议，R6回环口1.1.1.1

R3为出口路由器f0/0 和f1/0都可以访问到1.1.1.1

R4、R5充当PC机器

R6:配置 

interface Loopback0

 ip address 1.1.1.1 255.255.255.255

!

interface FastEthernet0/0

 ip address 16.1.1.6 255.255.255.0

 duplex auto

 speed auto

!

interface FastEthernet1/0

 ip address 26.1.1.6 255.255.255.0

 duplex auto

 speed auto

!

router ospf 1

 log-adjacency-changes

 network 1.1.1.1 0.0.0.0 area 0

 network 16.1.1.0 0.0.0.255 area 0

 network 26.1.1.0 0.0.0.255 area 0

!

R5 配置

 

interface FastEthernet0/0

 ip address 192.168.2.2 255.255.255.0

 no ip route-cache

 duplex auto

 speed auto

!

ip default-gateway 192.168.2.1

R4配置

 

interface FastEthernet0/0

 ip address 192.168.1.2 255.255.255.0

 no ip route-cache

 duplex auto

 speed auto

!

ip default-gateway 192.168.1.1

R3配置

SLA配置

 

ip sla monitor 1

 type echo protocol ipIcmpEcho 13.1.1.1

ip sla monitor schedule 1 life forever start-time now

ip sla monitor 2

 type echo protocol ipIcmpEcho 23.1.1.2

 timeout 60000 这里我延迟一分钟切换

ip sla monitor schedule 2 life forever start-time now

定义跟踪

track 123 rtr 1 reachability       

track 124 rtr 2 reachability

interface FastEthernet0/0

 ip address 13.1.1.3 255.255.255.0

 ip nat outside

 ip virtual-reassembly

 duplex auto

 speed auto

!

interface FastEthernet1/0

 ip address 23.1.1.3 255.255.255.0

 ip nat outside

 ip virtual-reassembly

 duplex auto

 speed auto

!

interface FastEthernet2/0

 ip address 192.168.1.1 255.255.255.0

 ip nat inside

 ip virtual-reassembly

 ip policy route-map 1

 duplex auto

 speed auto

!

interface FastEthernet3/0

 ip address 192.168.2.1 255.255.255.0

 ip nat inside

 ip virtual-reassembly

 ip policy route-map 1

 duplex auto

 speed auto

!

ip http server

no ip http secure-server

ip route 0.0.0.0 0.0.0.0 13.1.1.1 track 123

ip route 0.0.0.0 0.0.0.0 23.1.1.2 track 124

!

!

ip nat inside source route-map 2 interface FastEthernet0/0 overload

ip nat inside source route-map 3 interface FastEthernet1/0 overload

ip nat inside source route-map 4 interface FastEthernet0/0 overload

ip nat inside source route-map 5 interface FastEthernet1/0 overload

!

ip access-list extended all-net

access-list 1 permit 192.168.1.0 0.0.0.255
http://www.luyouqiwang.com/14407/ 
access-list 2 permit 192.168.2.0 0.0.0.255

!

route-map 1 permit 10

 match ip address 1

 set ip next-hop verify-availability 13.1.1.1 1 track 123

 set ip next-hop verify-availability 23.1.1.2 2 track 124

!

route-map 1 permit 20

 match ip address 2

 set ip next-hop verify-availability 23.1.1.2 1 track 124

 set ip next-hop verify-availability 13.1.1.1 2 track 123

!

route-map 2 permit 10

 match ip address 1

 match ip next-hop 3

!

route-map 3 permit 10

 match ip address 1

 match ip next-hop 4

!

route-map 4 permit 10

 match ip address 2

 match ip next-hop 3

!

route-map 5 permit 10

 match ip address 2

 match ip next-hop 4

 

R2配置

 

interface FastEthernet0/0

 ip address 26.1.1.2 255.255.255.0

 duplex auto

 speed auto

!         

interface FastEthernet1/0

 ip address 23.1.1.2 255.255.255.0

 duplex auto

 speed auto

!

router ospf 1

 log-adjacency-changes

 network 23.1.1.0 0.0.0.255 area 0

 network 26.1.1.0 0.0.0.255 area 0

R1配置

 

interface FastEthernet0/0

 ip address 16.1.1.1 255.255.255.0

 duplex auto

 speed auto

!         

interface FastEthernet1/0

 ip address 13.1.1.1 255.255.255.0

 duplex auto

 speed auto

!

router ospf 1

 log-adjacency-changes

 network 13.1.1.0 0.0.0.255 area 0

 network 16.1.1.0 0.0.0.255 area 0