拓扑：

 

---------------PE1------------------------

mpls label range 200 299 mpls label protocol ldp mpls ldp router-id Loopback0 interface Loopback0 ip address 192.168.1.1 255.255.255.255 no shut ! interface FastEthernet0/1 ip address 23.1.1.2 255.255.255.0 no shut mpls ip ! ! router ospf 100 router-id 2.2.2.2 log-adjacency-changes network 23.1.1.0 0.0.0.255 area 0 network 192.168.1.1 0.0.0.0 area 0 ---------------------P---------------------- mpls label range 300 399 mpls label protocol ldp mpls ldp router-id Loopback0 ! interface Loopback0 ip address 192.168.1.2 255.255.255.255 no shut interface FastEthernet0/0 ip address 34.1.1.3 255.255.255.0 no shut mpls ip ! interface FastEthernet0/1 ip address 23.1.1.3 255.255.255.0 no shut mpls ip ! ! router ospf 100 router-id 3.3.3.3 log-adjacency-changes network 23.1.1.0 0.0.0.255 area 0 network 34.1.1.0 0.0.0.255 area 0 network 192.168.1.2 0.0.0.0 area 0 -----------------PE2--------------------- mpls label range 400 499 mpls label protocol ldp mpls ldp router-id Loopback0 ! interface Loopback0 ip address 192.168.1.3 255.255.255.255 no shut interface FastEthernet0/0 ip address 34.1.1.4 255.255.255.0 mpls ip no shut router ospf 100 router-id 4.4.4.4 log-adjacency-changes network 34.1.1.0 0.0.0.255 area 0 network 192.168.1.3 0.0.0.0 area 0 ------------------CE1----------------------- interface FastEthernet0/0.100 encapsulation dot1Q 100 ip address 192.168.100.100 255.255.255.0 ------------------CE2------------------ interface FastEthernet0/1.200

encapsulation dot1Q 200

ip address 192.168.100.105 255.255.255.0

验证基本联通性：

（1）验证路由

（2）验证启用了MPLS的接口是否可以

（3）验证P路由器已经发现PE路由器

（4）验证邻居

配置端口透传

（PE1）F0/0接口

（PE2）F0/1接口

验证透传：

（1）VC状态

（2）连通性