1. 配置IP地址
[PE1-GigabitEthernet0/0/0]ip add 10.1.1.1 24
[PE1-LoopBack0]ip add 1.1.1.1 32
[PE2-GigabitEthernet0/0/0]ip add 10.1.2.2 24
[PE2-LoopBack0]ip add 2.2.2.2 32
[PE3-GigabitEthernet0/0/0]ip add 10.1.3.3 24
[PE3-LoopBack0]ip add 3.3.3.3 32
[P-GigabitEthernet0/0/0]ip add 10.1.1.4 24
[P-GigabitEthernet0/0/1]ip add 10.1.2.4 24
[P-GigabitEthernet0/0/2]ip add 10.1.3.4 24
[P-LoopBack0]ip add 4.4.4.4 32
2. 配置IS-IS协议发布各节点接口所连网段和LSR ID的主机路由
[PE1]isis 1
[PE1-isis-1]is-level level-2
[PE1-isis-1]network-entity 86.4501.0010.0100.0001.00
[PE1-GigabitEthernet0/0/0]isis enable 1
[PE1-LoopBack0]isis enable 1
[PE2]isis 1
[PE2-isis-1]is-level level-2
[PE2-isis-1]network-entity 86.4501.0020.0200.0002.00
[PE2-GigabitEthernet0/0/0]isis enable 1
[PE2-LoopBack0]isis enable 1
[PE3]isis 1
[PE3-isis-1]is-level level-2
[PE3-isis-1]network-entity 86.4501.0030.0300.0003.00
[PE3-GigabitEthernet0/0/0]isis enable 1
[PE3-LoopBack0]isis enable 1
[P]isis 1
[P-isis-1]is-level level-2
[P-isis-1]network-entity 86.4501.0040.0400.0004.00
[P-GigabitEthernet0/0/0]isis enable 1
[P-GigabitEthernet0/0/1]isis enable 1
[P-GigabitEthernet0/0/2]isis enable 1
[P-LoopBack0]isis enable 1
3. 配置本地LDP会话
[PE1]mpls lsr-id 1.1.1.1
[PE1]mpls
[PE1]mpls ldp
[PE1-GigabitEthernet0/0/0]mpls
[PE1-GigabitEthernet0/0/0]mpls ldp
[PE2]mpls lsr-id 2.2.2.2
[PE2]mpls
[PE2]mpls ldp
[PE2-GigabitEthernet0/0/0]mpls
[PE2-GigabitEthernet0/0/0]mpls ldp
[PE3]mpls lsr-id 3.3.3.3
[PE3]mpls
[PE3]mpls ldp
[PE3-GigabitEthernet0/0/0]mpls
[PE3-GigabitEthernet0/0/0]mpls ldp
[P]mpls lsr-id 4.4.4.4
[P]mpls
[P]mpls ldp
[P-GigabitEthernet0/0/0]mpls
[P-GigabitEthernet0/0/0]mpls ldp
[P-GigabitEthernet0/0/1]mpls
[P-GigabitEthernet0/0/1]mpls ldp
[P-GigabitEthernet0/0/2]mpls
[P-GigabitEthernet0/0/2]mpls ldp
4. 在PW两端的PE之间要建立MPLS LDP远端对等体关系
[PE1]mpls ldp remote-peer pe2
[PE1-mpls-ldp-remote-pe2]remote-ip 2.2.2.2
[PE1]mpls ldp remote-peer pe3
[PE1-mpls-ldp-remote-pe3]remote-ip 3.3.3.3
[PE2]mpls ldp remote-peer pe1
[PE2-mpls-ldp-remote-pe1]remote-ip 1.1.1.1
[PE3]mpls ldp remote-peer pe1
[PE3-mpls-ldp-remote-pe1]remote-ip 1.1.1.1
5. 在PW两端的PE之间配置禁止向远端对等体分配标签
[PE1]mpls ldp remote-peer pe2
[PE1-mpls-ldp-remote-pe2]remote-ip 2.2.2.2 pwe3
[PE1]mpls ldp remote-peer pe3
[PE1-mpls-ldp-remote-pe3]remote-ip 3.3.3.3 pwe3
[PE2]mpls ldp remote-peer pe1
[PE2-mpls-ldp-remote-pe1]remote-ip 1.1.1.1 pwe3
[PE3]mpls ldp remote-peer pe1
[PE3-mpls-ldp-remote-pe1]remote-ip 1.1.1.1 pwe3
