MPLS ×××是一种基于MPLS技术的IP-×××，是在网络路由和交换设备上应用MPLS技术，简化核心路由器的路由选择方式，利用结合传统路由技术的标记交换实现的IP虚拟专用网络（IP ×××），可用来构造宽带的Intranet、Extranet，满足多种灵活的业务需求。
下面介绍一些基本的配置
配置如下：
 
PE.1
=====================================

hostname PE.1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
ip vrf A
 rd 1:1  
 route-target export 100:100
 route-target import 200:200
!
!
mpls label range 100 199
mpls label protocol ldp
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!        
!
!
!
!
interface Loopback0
 ip address 202.1.1.1 255.255.255.0
 ip router isis
!
interface Serial1/0
 ip vrf forwarding A
 ip address 12.1.1.2 255.255.255.0
 serial restart-delay 0
!
interface Serial1/1
 ip address 202.12.1.1 255.255.255.0
 ip router isis
 mpls ip
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 10 vrf A
 router-id 2.2.2.2
 log-adjacency-changes
 redistribute bgp 1 subnets
 network 12.1.1.2 0.0.0.0 area 0
!
router isis
 net 49.0001.0000.0000.0001.00
!
router bgp 1
 bgp router-id 202.1.1.1
 no bgp default ipv4-unicast
 bgp log-neighbor-changes
 neighbor 202.2.2.2 remote-as 1
 neighbor 202.2.2.2 update-source Loopback0
 neighbor 202.3.3.3 remote-as 1
 neighbor 202.3.3.3 update-source Loopback0
 !
 address-family ipv4
 neighbor 202.2.2.2 activate
 neighbor 202.3.3.3 activate
 no auto-summary
 no synchronization
 exit-address-family
 !
 address-family ***v4
 neighbor 202.2.2.2 activate
 neighbor 202.2.2.2 send-community extended
 neighbor 202.3.3.3 activate
 neighbor 202.3.3.3 send-community extended
 exit-address-family
 !
 address-family ipv4 vrf A
 redistribute ospf 10 vrf A
 redistribute odr
 no synchronization
 exit-address-family
!
ip http server
no ip http secure-server
!
!
!
!
!
mpls ldp router-id Loopback0
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end

PE.2
====================================
 
hostname PE.2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
ip vrf A
 rd 2:2  
 route-target export 200:200
 route-target import 100:100
!
!
mpls label range 200 299
mpls label protocol ldp
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!        
!
!
!
!
interface Loopback0
 ip address 202.2.2.2 255.255.255.0
 ip router isis
!
interface Serial1/0
 ip address 202.12.1.2 255.255.255.0
 ip router isis
 mpls ip
 serial restart-delay 0
!
interface Serial1/1
 ip address 202.23.1.1 255.255.255.0
 ip router isis
 mpls ip
 serial restart-delay 0
!
interface Serial1/2
 ip vrf forwarding A
 ip address 23.1.1.2 255.255.255.0
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 10 vrf A
 router-id 4.4.4.4
 log-adjacency-changes
 redistribute bgp 1 subnets
 network 23.1.1.2 0.0.0.0 area 0
!
router isis
 net 49.0001.0000.0000.0002.00
!
router bgp 1
 bgp router-id 202.2.2.2
 no bgp default ipv4-unicast
 bgp log-neighbor-changes
 neighbor 202.1.1.1 remote-as 1
 neighbor 202.1.1.1 update-source Loopback0
 !       
 address-family ipv4
 neighbor 202.1.1.1 activate
 no auto-summary
 no synchronization
 exit-address-family
 !
 address-family ***v4
 neighbor 202.1.1.1 activate
 neighbor 202.1.1.1 send-community extended
 exit-address-family
 !
 address-family ipv4 vrf A
 redistribute ospf 10 vrf A
 no synchronization
 exit-address-family
!
ip http server
no ip http secure-server
!
!
!
!
!        
mpls ldp router-id Loopback0
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end
 
PE.3
=====================================

hostname PE.3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
ip vrf A
 rd 3:3  
 route-target export 200:200
 route-target import 100:100
!
!
mpls label range 300 399
mpls label protocol ldp
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!        
!
!
!
!
interface Loopback0
 ip address 202.3.3.3 255.255.255.0
 ip router isis
!
interface Serial1/0
 ip address 202.23.1.2 255.255.255.0
 ip router isis
 mpls ip
 serial restart-delay 0
!
interface Serial1/1
 ip vrf forwarding A
 ip address 34.1.1.2 255.255.255.0
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 10 vrf A
 router-id 6.6.6.6
 log-adjacency-changes
 redistribute bgp 1 subnets
 network 34.1.1.2 0.0.0.0 area 0
!
router isis
 net 49.0001.0000.0000.0003.00
!
router bgp 1
 bgp router-id 202.3.3.3
 no bgp default ipv4-unicast
 bgp log-neighbor-changes
 neighbor 202.1.1.1 remote-as 1
 !
 address-family ipv4
 neighbor 202.1.1.1 activate
 no auto-summary
 no synchronization
 exit-address-family
 !
 address-family ***v4
 neighbor 202.1.1.1 activate
 neighbor 202.1.1.1 send-community extended
 exit-address-family
 !
 address-family ipv4 vrf A
 redistribute ospf 10 vrf A
 no synchronization
 exit-address-family
!
ip http server
no ip http secure-server
!
!
!
!
!
mpls ldp router-id Loopback0
!        
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end
 

HUB
=======================================
hostname hub
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
!
!        
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 10.1.1.1 255.255.255.0
!        
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 ip address 12.1.1.1 255.255.255.0
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 10
 router-id 1.1.1.1
 log-adjacency-changes
 network 10.1.1.1 0.0.0.0 area 0
 network 12.1.1.1 0.0.0.0 area 0
!
ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end
 

SPOKE1
===============================
hostname CE.spoke1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
!
!        
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 20.1.1.1 255.255.255.0
!        
interface Serial1/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 ip address 23.1.1.1 255.255.255.0
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 10
 router-id 3.3.3.3
 log-adjacency-changes
 network 20.1.1.1 0.0.0.0 area 0
 network 23.1.1.1 0.0.0.0 area 0
!
ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end
 
 
SPOKE2
=======================================

hostname CE.spoke2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
!
!        
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 30.1.1.1 255.255.255.0
!        
interface Serial1/0
 ip address 34.1.1.1 255.255.255.0
 serial restart-delay 0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 10
 router-id 5.5.5.5
 log-adjacency-changes
 network 30.1.1.1 0.0.0.0 area 0
 network 34.1.1.1 0.0.0.0 area 0
!
ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end