MPLS VPN 实验手册(cisco)

MPLS VPN 实验

一、拓朴图

说明：

1、设备接互联地址：如R1与R2间的互联地址为10.1.12.0/24；LOOKBACK接口地址为：1.1.1.1/32；

2、CORE内运行OSPF（进行号100,area 0）,激活MPLS； 3、PE上创建VRF（VPNA），PE与CE间通过OSPF互联（进程号：1）； 4、R2与R4两台PE间建立MP-IBGP邻接关系，（BGP AS234） 5、完成PE-CE间的路由重发布；

二、配置信息：

R1：（CE1）

R1#show run

!

hostname R1 ! ip cef !

interface Loopback0

ip address 1.1.1.1 255.255.255.255 ip ospf network point-to-point !

interface FastEthernet0/0

ip address 10.1.12.1 255.255.255.0 duplex auto speed auto mpls ip !

interface FastEthernet0/1 no ip address shutdown duplex auto speed auto !

router ospf 1 router-id 1.1.1.1

log-adjacency-changes

network 1.1.1.1 0.0.0.0 area 0 network 10.1.12.1 0.0.0.0 area 0 ! ! end

R1#

session-192.168.197.1 2001-20170116.log

R2：（PE1）

R2#

R2#show run !

hostname R2 ! ip cef !

ip vrf vpna

rd 1:1

route-target export 234:2 route-target import 234:4 !

mpls label range 200 299 mpls ldp router-id Loopback0 ! !

interface Loopback0

ip address 2.2.2.2 255.255.255.255 !

interface FastEthernet0/0 ip vrf forwarding vpna

ip address 10.1.12.2 255.255.255.0 duplex auto speed auto !

interface FastEthernet0/1

ip address 10.1.23.2 255.255.255.0 duplex auto speed auto mpls ip !

router ospf 1 vrf vpna log-adjacency-changes

redistribute bgp 234 subnets network 10.1.12.2 0.0.0.0 area 0 !

router ospf 100 router-id 2.2.2.2

log-adjacency-changes

network 2.2.2.2 0.0.0.0 area 0 network 10.1.23.2 0.0.0.0 area 0 !

router bgp 234

bgp router-id 2.2.2.2

no bgp default ipv4-unicast bgp log-neighbor-changes

neighbor 4.4.4.4 remote-as 234

neighbor 4.4.4.4 update-source Loopback0 !

address-family vpnv4 neighbor 4.4.4.4 activate

neighbor 4.4.4.4 send-community extended

exit-address-family !

address-family ipv4 vrf vpna

redistribute ospf 1 vrf vpna match internal external 1 external 2 no auto-summary no synchronization exit-address-family ! ! end

R2#

session-192.168.197.1 2002-20170116.log

R3：（P）

R3#

R3#show run !

hostname R3 ! ip cef !

mpls label range 300 399 mpls ldp router-id Loopback0 ! !

interface Loopback0

ip address 3.3.3.3 255.255.255.255 !

interface FastEthernet0/0

ip address 10.1.23.3 255.255.255.0 duplex auto speed auto mpls ip !

interface FastEthernet0/1

ip address 10.1.34.3 255.255.255.0 duplex auto