MPLS VPN 实验手册(cisco)

speed auto mpls ip !

router ospf 100 router-id 3.3.3.3

log-adjacency-changes

network 3.3.3.3 0.0.0.0 area 0 network 10.1.23.3 0.0.0.0 area 0 network 10.1.34.3 0.0.0.0 area 0 ! ! end

R3#

session-192.168.197.1 2003-20170116.log

R4：（PE2）

R4#

R4#show run

Building configuration... !

hostname R4 ! ip cef !

ip vrf vpna rd 1:1

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

mpls label range 400 499 mpls ldp router-id Loopback0 ! !

interface Loopback0

ip address 4.4.4.4 255.255.255.255 !

interface FastEthernet0/0

ip address 10.1.34.4 255.255.255.0 duplex auto speed auto

mpls ip !

interface FastEthernet0/1 ip vrf forwarding vpna

ip address 10.1.45.4 255.255.255.0 duplex auto speed auto !

router ospf 1 vrf vpna log-adjacency-changes

redistribute bgp 234 subnets network 10.1.45.4 0.0.0.0 area 0 !

router ospf 100 router-id 4.4.4.4

log-adjacency-changes

network 4.4.4.4 0.0.0.0 area 0 network 10.1.34.4 0.0.0.0 area 0 !

router bgp 234

bgp router-id 4.4.4.4

no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 2.2.2.2 remote-as 234

neighbor 2.2.2.2 update-source Loopback0 !

address-family vpnv4 neighbor 2.2.2.2 activate

neighbor 2.2.2.2 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

session-192.168.197.1 2004-20170116.log

R5：（CE2）

R5#

R5#show run

Building configuration... !

hostname R5 ! ip cef !

interface Loopback0

ip address 5.5.5.5 255.255.255.0 ip ospf network point-to-point !

interface FastEthernet0/0

ip address 10.1.45.5 255.255.255.0 duplex auto speed auto !

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

router ospf 1 router-id 5.5.5.5

log-adjacency-changes

network 5.5.5.5 0.0.0.0 area 0 network 10.1.45.5 0.0.0.0 area 0 ! end

R5#

session-192.168.197.1 2005-20170116.log

三、相关检查命令：

1、R2#sh ip ospf neighbor //查PE的OSPF邻居

R2#sh ip ospf neighbor //查PE的OSPF邻居

Neighbor ID Pri State Dead Time Address Interface

3.3.3.3 1 FULL/DR 00:00:30 10.1.23.3 FastEthernet0/1 1.1.1.1 1 FULL/BDR 00:00:30 10.1.12.1 FastEthernet0/0

2、R2#sh mpls ldp neighbor //查PE上的MPLS邻居信息

R2#sh mpls ldp neighbor //查PE上的MPLS邻居信息 Peer LDP Ident: 3.3.3.3:0; Local LDP Ident 2.2.2.2:0 TCP connection: 3.3.3.3.19951 - 2.2.2.2.646

State: Oper; Msgs sent/rcvd: 11/11; Downstream Up time: 00:03:23 LDP discovery sources:

FastEthernet0/1, Src IP addr: 10.1.23.3 Addresses bound to peer LDP Ident:

10.1.23.3 3.3.3.3 10.1.34.3

3、R2#sh mpls forwarding-table //查PE上的MPLS标签转发表

R2#sh mpls forwarding-table //查PE上的MPLS标签转发表

Local Outgoing Prefix Bytes tag Outgoing Next Hop tag tag or VC or Tunnel Id switched interface 200 Pop tag 10.1.34.0/24 0 Fa0/1 10.1.23.3 201 Pop tag 3.3.3.3/32 0 Fa0/1 10.1.23.3 202 300 4.4.4.4/32 0 Fa0/1 10.1.23.3 203 Untagged 1.1.1.1/32[V] 3138 Fa0/0 10.1.12.1 204 Aggregate 10.1.12.0/24[V] 0 R2#