1. 配置IP地址
[LSR1-GigabitEthernet0/0/0]ip add 10.1.1.1 24
[LSR1-LoopBack0]ip add 1.1.1.1 32
[LSR2-GigabitEthernet0/0/0]ip add 10.1.1.2 24
[LSR2-GigabitEthernet0/0/1]ip add 10.1.2.2 24
[LSR2-GigabitEthernet0/0/2]ip add 10.1.4.2 24
[LSR2-LoopBack0]ip add 2.2.2.2 32
[LSR3-GigabitEthernet0/0/0]ip add 10.1.2.3 24
[LSR3-LoopBack0]ip add 3.3.3.3 32
[LSR4-GigabitEthernet0/0/0]ip add 10.1.4.4 24
[LSR4-LoopBack0]ip add 4.4.4.4 32
2. 配置OSPF协议发布各节点接口所连网段和LSR ID的主机路由
[LSR1]ospf 1
[LSR1-ospf-1]area 0
[LSR1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[LSR1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[LSR2]ospf 1
[LSR2-ospf-1]area 0
[LSR2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[LSR2-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
[LSR2-ospf-1-area-0.0.0.0]network 10.1.4.0 0.0.0.255
[LSR2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[LSR3]ospf 1
[LSR3-ospf-1]area 0
[LSR3-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
[LSR3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[LSR4]ospf 1
[LSR4-ospf-1]area 0
[LSR4-ospf-1-area-0.0.0.0]network 10.1.4.0 0.0.0.255
[LSR4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0
3. 配置本地LDP会话
[LSR1]mpls lsr-id 1.1.1.1
[LSR1]mpls
[LSR1]mpls ldp
[LSR1-GigabitEthernet0/0/0]mpls
[LSR1-GigabitEthernet0/0/0]mpls ldp
[LSR2]mpls lsr-id 2.2.2.2
[LSR2]mpls
[LSR2]mpls ldp
[LSR2-GigabitEthernet0/0/0]mpls
[LSR2-GigabitEthernet0/0/0]mpls ldp
[LSR2-GigabitEthernet0/0/1]mpls
[LSR2-GigabitEthernet0/0/1]mpls ldp
[LSR2-GigabitEthernet0/0/2]mpls
[LSR2-GigabitEthernet0/0/2]mpls ldp
[LSR3]mpls lsr-id 3.3.3.3
[LSR3]mpls
[LSR3]mpls ldp
[LSR3-GigabitEthernet0/0/0]mpls
[LSR3-GigabitEthernet0/0/0]mpls ldp
[LSR4]mpls lsr-id 4.4.4.4
[LSR4]mpls
[LSR4]mpls ldp
[LSR4-GigabitEthernet0/0/0]mpls
[LSR4-GigabitEthernet0/0/0]mpls ldp
4. 配置LDP Inbound策略
[LSR4]ip ip-prefix a1 permit 3.3.3.3 32 //配置IP地址前缀列表，只允许到LSR3的路由通过
[LSR4]mpls ldp
[LSR4-mpls-ldp]inbound peer 2.2.2.2 fec ip-prefix a1 //配置Inbound策略，只接收由LSR2发送的到LSR3的标签映射消息
5. 检查配置
