15.2 MPLS LDP

1）R1配置OSPF

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255

2）R2配置OSPF

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R2-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255

3）R3配置OSPF

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255

4）R1配置MPLS基本能力，并使能LDP

[R1]mpls lsr-id 1.1.1.1
[R1]mpls 
[R1]mpls ldp 
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]mpls 
[R1-GigabitEthernet0/0/0]mpls ldp

5）R2配置MPLS基本能力，并使能LDP

[R2]mpls lsr-id 1.1.1.1
[R2]mpls 
[R2]mpls ldp 
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]mpls
[R2-GigabitEthernet0/0/0]mpls ldp 
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]mpls
[R2-GigabitEthernet0/0/1]mpls ldp 

6）R3配置MPLS基本能力，并使能LDP

[R3]mpls lsr-id 1.1.1.1
[R3]mpls 
[R3]mpls ldp 
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]mpls 
[R3-GigabitEthernet0/0/1]mpls ldp 

7）R2查看LDP的对等体

[R2]display mpls ldp peer
1.1.1.1:0              1.1.1.1            GigabitEthernet0/0/0
 3.3.3.3:0              3.3.3.3            GigabitEthernet0/0/1

8）R2查看LDP LSP

[R2]display mpls ldp lsp 
 LDP LSP Information
 DestAddress/Mask   In/OutLabel    UpstreamPeer    NextHop         OutInterface
 1.1.1.1/32         NULL/3         -               12.1.1.1        GE0/0/0
 1.1.1.1/32         1024/3         1.1.1.1         12.1.1.1        GE0/0/0
 1.1.1.1/32         1024/3         3.3.3.3         12.1.1.1        GE0/0/0
*1.1.1.1/32         Liberal/1024                   DS/3.3.3.3
 2.2.2.2/32         3/NULL         1.1.1.1         127.0.0.1       InLoop0
 2.2.2.2/32         3/NULL         3.3.3.3         127.0.0.1       InLoop0
*2.2.2.2/32         Liberal/1024                   DS/1.1.1.1
*2.2.2.2/32         Liberal/1025                   DS/3.3.3.3
 3.3.3.3/32         NULL/3         -               23.1.1.3        GE0/0/1
 3.3.3.3/32         1025/3         1.1.1.1         23.1.1.3        GE0/0/1
 3.3.3.3/32         1025/3         3.3.3.3         23.1.1.3        GE0/0/1
*3.3.3.3/32         Liberal/1025                   DS/1.1.1.1