26.1.  配置基本的MPLS P路由器

le="FONT-FAMILY: 宋体">提问 配置MPLS核心网络里面的P路由器

回答

Router-P1#configure terminal

Enter configuration commands, one per line.  End with CNTL/Z.

Router-P1(config)#ip cef

Router-P1(config)#mpls ip

Router-P1(config)#interface FastEthernet0/0

Router-P1(config-if)#description connection to Router-PE2

Router-P1(config-if)#ip address 10.1.2.11 255.255.255.0

Router-P1(config-if)#mpls ip

Router-P1(config-if)#exit

Router-P1(config)#interface Serial0/0

Router-P1(config-if)#description connection to Router-PE1

Router-P1(config-if)#ip address 10.1.1.14 255.255.255.252

Router-P1(config-if)#mpls ip

Router-P1(config-if)#exit

Router-P1(config)#interface Serial0/1

Router-P1(config-if)#description connection to Router-PE3

Router-P1(config-if)#ip address 10.1.1.10 255.255.255.252

Router-P1(config-if)#mpls ip

Router-P1(config-if)#exit

Router-P1(config)#interface Loopback0

Router-P1(config-if)#ip address 10.0.0.11 255.255.255.255

Router-P1(config-if)#exit

Router-P1(config)#router ospf 99

Router-P1(config-router)#router-id 10.0.0.11

Router-P1(config-router)#network 10.0.0.0 0.255.255.255 area 0

Router-P1(config-router)#exit

Router-P1(config)#end

Router-P1#

注释 对于P路由器就是启用CEF和在端口启用MPLS，对于tag-switching ip instead 和mpls ip两个命令都基本一致，对于是否配置ldp或者tdp也不是必要的，路由器会自动适应。有三个验证命令：

Router-P1#show mpls interfaces

Interface              IP            Tunnel   Operational

FastEthernet0/0        Yes (tdp)     No       Yes

Serial0/0              Yes (tdp)     No       Yes

Serial0/1              Yes (tdp)     No       Yes

Router-P1#show mpls ldp neighbor

    Peer TDP Ident: 10.0.0.2:0; Local TDP Ident 10.0.0.11:0

        TCP connection: 10.0.0.2.711 - 10.0.0.11.28185

        State: Oper; PIEs sent/rcvd: 0/82; Downstream

        Up time: 01:04:45

        TDP discovery sources:

          Serial0/0, Src IP addr: 10.1.1.13

        Addresses bound to peer TDP Ident:

          10.0.0.2        10.1.1.2        10.1.1.13

Router-P1#show mpls forwarding-table

Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop

tag    tag or VC   or Tunnel Id      switched   interface

16     Pop tag     10.0.0.2/32       7697       Se0/0      point2point

17     Pop tag     10.1.1.0/30       0          Se0/0      point2point

18     Pop tag     10.0.0.3/32       6685       Se0/1      point2point

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