CISCOOSPFMPLSBGP配置实例加讲解
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!
interface FastEthernet2/0
no ip address
shutdown
duplex half
!
interface FastEthernet3/0
no ip address
shutdown
duplex half
!
router ospf 100
log-adjacency-changes
!
hostname pe1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
!
ip vrf vpna
rd 1:100
route-target export 200:1
route-target import 200:1
!
ip cef
ip audit po max-events 100
!
!
interface Loopback0
ip address 202.98.4.1 255.255.255.255
!
interface FastEthernet0/0
description to_r5
ip vrf forwarding vpna
redistribute connected subnets
redistribute static subnets
network10.1.1.6 0.0.0.0 area 0
network10.1.1.10 0.0.0.0 area 0
!
ip classless
no ip http server
no ip http secure-server
no service password-encryption
!
hostname p
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
!
ip cef
ip audit po max-events 100
!
!
interface Loopback0
ip address 202.98.4.3 255.255.255.255
!
interface FastEthernet0/0
description to_r2
ip address10.1.1.10 255.255.255.252
ip ospf cost 20
duplex full
tag-switching mtu 1508
tag-switching ip
!
interface FastEthernet1/0
description to_r3
ip address10.1.1.6 255.255.255.252
ip ospf cost 20
duplex full
tag-switching mtu 1508
tag-switching ip
ip address 172.16.1.1 255.255.255.252
duplex full
tag-switching ip
!
interface FastEthernet1/0
description to_r1
ip address10.1.1.5 255.255.255.252
ip ospf cost 20
duplex full
tag-switching mtu 1508
tag-switching ip
!
interface FastEthernet2/0
ip address10.1.1.1 255.255.255.252
ip ospf cost 100
duplex full
taHale Waihona Puke Baidu-switching mtu 1508
Current configuration : 1813 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
配置思路：
1、在P和两台PE路由器这间通过OSPF动态路由协议，在P和PE路由器两两互连的端口上启用MPLS，两台PE之间的路为备份路由，这属公网路由。
2、两台PE路由器这间启用BGP路由协议，这使得属于VPN的IP地址能在两个网络（两台CE所属的网络）互相发布，这属私网（VPN）路由。
3、在PE路由器上向所属的CE路由器指VPN路由，这打通了两个网络（两台CE所属的网络）之间的路由。
三、网络拓扑图
四、
p#SHOW RUN
Building configuration...
Current configuration : 1172 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
logging synchronous
stopbits 1
line aux 0
stopbits 1
line vty 0 4
login
!
!
end
p#
五、
pe1#show run
Building configuration...
CISCO路由器
OSPF+MPLS+BGP配置实例
二OO八年九月四日
一、网络环境
由5台CISCO7204组成的网络,一台为P路由器,两台PE路由器,两台CE路由器;
二、网络描述
在P和两台PE路由器这间通过OSPF动态路由协议完成MPLS网络的建立，两台PE路由器这间启用BGP路由协议，在PE路由器上向所属的CE路由器指VPN路由，在CE路由器中向PE路由器配置静态路由。
network10.1.1.0 0.0.0.255 area 0
network 202.98.4.00.0.0.255 area 0
tag-switching ip
!
interface FastEthernet3/0
no ip address
shutdown
duplex half
!
router ospf 100
log-adjacency-changes
redistribute connected metric-type 1 subnets
interface FastEthernet2/0
no ip address
shutdown
duplex half
!
interface FastEthernet3/0
no ip address
shutdown
duplex half
!
router ospf 100
log-adjacency-changes
!
hostname pe1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
!
ip vrf vpna
rd 1:100
route-target export 200:1
route-target import 200:1
!
ip cef
ip audit po max-events 100
!
!
interface Loopback0
ip address 202.98.4.1 255.255.255.255
!
interface FastEthernet0/0
description to_r5
ip vrf forwarding vpna
redistribute connected subnets
redistribute static subnets
network10.1.1.6 0.0.0.0 area 0
network10.1.1.10 0.0.0.0 area 0
!
ip classless
no ip http server
no ip http secure-server
no service password-encryption
!
hostname p
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
!
ip cef
ip audit po max-events 100
!
!
interface Loopback0
ip address 202.98.4.3 255.255.255.255
!
interface FastEthernet0/0
description to_r2
ip address10.1.1.10 255.255.255.252
ip ospf cost 20
duplex full
tag-switching mtu 1508
tag-switching ip
!
interface FastEthernet1/0
description to_r3
ip address10.1.1.6 255.255.255.252
ip ospf cost 20
duplex full
tag-switching mtu 1508
tag-switching ip
ip address 172.16.1.1 255.255.255.252
duplex full
tag-switching ip
!
interface FastEthernet1/0
description to_r1
ip address10.1.1.5 255.255.255.252
ip ospf cost 20
duplex full
tag-switching mtu 1508
tag-switching ip
!
interface FastEthernet2/0
ip address10.1.1.1 255.255.255.252
ip ospf cost 100
duplex full
taHale Waihona Puke Baidu-switching mtu 1508
Current configuration : 1813 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
配置思路：
1、在P和两台PE路由器这间通过OSPF动态路由协议，在P和PE路由器两两互连的端口上启用MPLS，两台PE之间的路为备份路由，这属公网路由。
2、两台PE路由器这间启用BGP路由协议，这使得属于VPN的IP地址能在两个网络（两台CE所属的网络）互相发布，这属私网（VPN）路由。
3、在PE路由器上向所属的CE路由器指VPN路由，这打通了两个网络（两台CE所属的网络）之间的路由。
三、网络拓扑图
四、
p#SHOW RUN
Building configuration...
Current configuration : 1172 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
logging synchronous
stopbits 1
line aux 0
stopbits 1
line vty 0 4
login
!
!
end
p#
五、
pe1#show run
Building configuration...
CISCO路由器
OSPF+MPLS+BGP配置实例
二OO八年九月四日
一、网络环境
由5台CISCO7204组成的网络,一台为P路由器,两台PE路由器,两台CE路由器;
二、网络描述
在P和两台PE路由器这间通过OSPF动态路由协议完成MPLS网络的建立，两台PE路由器这间启用BGP路由协议，在PE路由器上向所属的CE路由器指VPN路由，在CE路由器中向PE路由器配置静态路由。
network10.1.1.0 0.0.0.255 area 0
network 202.98.4.00.0.0.255 area 0
tag-switching ip
!
interface FastEthernet3/0
no ip address
shutdown
duplex half
!
router ospf 100
log-adjacency-changes
redistribute connected metric-type 1 subnets