跨域MPLS option A
跨越AS100和AS200两个自治系统
MCE1和MCE2上的loopback10组建vpn a，loopback20组建vpn b
option A的关键在于ASBR间，即P3和P4间通过静态或IGP传递路由，需要在ASBR上为每个vpn创建对应vpn-instance，绑定对应子接口到vpn-instance中
接口IP地址规划如下图：
PE1、PE2、PE3运行OSPF，打通AS 100内部路由；PE1和PE3间建ibgp
PE4、PE5、PE6运行OSPF，打通AS 200内部路由；PE4和PE6间建ibgp
PE1、PE2、PE3运行MPLS LDP
PE4、PE5、PE6运行MPLS LDP
vpn a的PE和CE间使用EBGP传路由，P3和P4间运行OSPF传路由
vpn b的PE和CE间，MCE1和P1间用静态路由，MCE2和P6间运行OPF，P3和P4间用静态路由
配置步骤：
| MCE1 | P1 | P2 | P3 | P4 | P5 | P6 | MCE2 |
| int loo 0 | int loo 0 | int loo 0 | int loo 0 | int loo 0 | int loo 0 | int loo 0 | int loo 0 |
| ip add 11.11.11.11 32 | ip add 1.1.1.1 32 | ip add 2.2.2.2 32 | ip add 3.3.3.3 32 | ip add 4.4.4.4 32 | ip add 5.5.5.5 32 | ip add 6.6.6.6 32 | ip add 22.22.22.22 32 |
| mpls lsr-id 1.1.1.1 | mpls lsr-id 2.2.2.2 | mpls lsr-id 3.3.3.3 | mpls lsr-id 4.4.4.4 | mpls lsr-id 5.5.5.5 | mpls lsr-id 6.6.6.6 | ||
| mpls | mpls | mpls | mpls | mpls | mpls | ||
| mpls ldp | mpls ldp | mpls ldp | mpls ldp | mpls ldp | mpls ldp | ||
| int g0/0/0 | int g0/0/0 | int g0/0/0 | int g0/0/0 | ||||
| ip add 12.1.1.1 24 | ip add 12.1.1.2 24 | ip add 56.1.1.5 24 | ip add 56.1.1.6 24 | ||||
| mpls | mpls | mpls | mpls | ||||
| mpls ldp | mpls ldp | mpls ldp | mpls ldp | ||||
| int g0/0/1 | int g0/0/1 | int g0/0/1 | int g0/0/1 | ||||
| ip add 23.1.1.2 24 | ip add 23.1.1.3 24 | ip add 45.1.1.4 24 | ip add 45.1.1.5 24 | ||||
| mpls | mpls | mpls | mpls | ||||
| mpls ldp | mpls ldp | mpls ldp | mpls ldp | ||||
| ospf router-id 1.1.1.1 | ospf router-id 2.2.2.2 | ospf router-id 3.3.3.3 | ospf router-id 4.4.4.4 | ospf router-id 5.5.5.5 | ospf router-id 6.6.6.6 | ||
| area 0 | area 0 | area 0 | area 0 | area 0 | area 0 | ||
| network 1.1.1.1 0.0.0.0 | network 2.2.2.2 0.0.0.0 | network 3.3.3.3 0.0.0.0 | network 4.4.4.4 0.0.0.0 | network 5.5.5.5 0.0.0.0 | network 6.6.6.6 0.0.0.0 | ||
| network 12.1.1.1 0.0.0.0 | network 12.1.1.2 0.0.0.0 | network 23.1.1.3 0.0.0.0 | network 45.1.1.4 0.0.0.0 | network 56.1.1.5 0.0.0.0 | network 56.1.1.6 0.0.0.0 | ||
| network 23.1.1.2 0.0.0.0 | network 45.1.1.5 0.0.0.0 | ||||||
| ip vpn-instance a | ip vpn-instance a | ip vpn-instance a | ip vpn-instance a | ip vpn-instance a | ip vpn-instance a | ||
| route-distinguisher 11:1 | route-distinguisher 1:1 | route-distinguisher 3:1 | route-distinguisher 4:1 | route-distinguisher 6:1 | route-distinguisher 22:1 | ||
| vpn-target 1:10 | vpn-target 1:10 | vpn-target 4:10 | vpn-target 4:10 | ||||
| ip vpn-instance b | ip vpn-instance b | ip vpn-instance b | ip vpn-instance b | ip vpn-instance b | ip vpn-instance b | ||
| route-distinguisher 11:2 | route-distinguisher 1:2 | route-distinguisher 3:2 | route-distinguisher 4:2 | route-distinguisher 6:2 | route-distinguisher 22:2 | ||
| vpn-target 1:20 | vpn-target 1:20 | vpn-target 4:20 | vpn-target 4:20 | ||||
| bgp 100 | bgp 100 | bgp 200 | bgp 200 | ||||
| peer 3.3.3.3 as-number 100 | peer 1.1.1.1 as-number 100 | peer 6.6.6.6 as-number 200 | peer 4.4.4.4 as-number 200 | ||||
| peer 3.3.3.3 con loo 0 | peer 1.1.1.1 con loo 0 | peer 6.6.6.6 con loo 0 | peer 4.4.4.4 con loo 0 | ||||
| undo peer 3.3.3.3 enable | undo peer 1.1.1.1 enable | undo peer 6.6.6.6 enable | undo peer 4.4.4.4 enable | ||||
| ipv4-family vpnv4 | ipv4-family vpnv4 | ipv4-family vpnv4 | ipv4-family vpnv4 | ||||
| peer 3.3.3.3 enable | peer 1.1.1.1 enable | peer 6.6.6.6 enable | peer 4.4.4.4 enable | ||||
| int g0/0/0 | int g0/0/0 | ||||||
| int g0/0/0.10 | int g0/0/0.10 | ||||||
| ip binding vpn-instance a | ip binding vpn-instance a | ||||||
| int loo 10 | ip add 10.1.34.3 24 | ip add 10.1.34.4 24 | int loo 10 | ||||
| ip binding vpn-instance a | dot1q termination vid 10 | dot1q termination vid 10 | ip binding vpn-instance a | ||||
| ip add 192.168.1.1 24 | arp broadcast enable | arp broadcast enable | ip add 172.16.1.1 24 | ||||
| int loo 20 | int g0/0/0.20 | int g0/0/0.20 | int loo 20 | ||||
| ip binding vpn-instance b | ip binding vpn-instance b | ip binding vpn-instance b | ip binding vpn-instance b | ||||
| ip add 192.168.1.1 24 | ip add 10.2.34.3 24 | ip add 10.2.34.4 24 | ip add 172.16.1.1 24 | ||||
| dot1q termination vid 20 | dot1q termination vid 20 | ||||||
| arp broadcast enable | arp broadcast enable | ||||||
| int g0/0/1 | int g0/0/1 | int g0/0/1 | int g0/0/1 | ||||
| int g0/0/1.10 | int g0/0/1.10 | int g0/0/1.10 | int g0/0/1.10 | ||||
| ip binding vpn-instance a | ip binding vpn-instance a | ip binding vpn-instance a | ip binding vpn-instance a | ||||
| ip add 10.1.11.11 24 | ip add 10.1.11.1 24 | ip add 10.1.62.6 24 | ip add 10.1.62.22 24 | ||||
| dot1q termination vid 10 | dot1q termination vid 10 | dot1q termination vid 10 | dot1q termination vid 10 | ||||
| arp broadcast enable | arp broadcast enable | arp broadcast enable | arp broadcast enable | ||||
| int g0/0/1.20 | int g0/0/1.20 | int g0/0/1.20 | int g0/0/1.20 | ||||
| ip binding vpn-instance b | ip binding vpn-instance b | ip binding vpn-instance b | ip binding vpn-instance b | ||||
| ip add 10.2.11.11 24 | ip add 10.2.11.1 24 | ip add 10.2.62.6 24 | ip add 10.2.62.22 24 | ||||
| dot1q termination vid 20 | dot1q termination vid 20 | dot1q termination vid 20 | dot1q termination vid 20 | ||||
| arp broadcast enable | arp broadcast enable | arp broadcast enable | arp broadcast enable | ||||
| bgp 65001 | bgp 100 | bgp 200 | bgp 65001 | ||||
| ipv4-family vpn-instance a | ipv4-family vpn-instance a | ipv4-family vpn-instance a | ipv4-family vpn-instance a | ||||
| peer 10.1.11.1 as-nu 100 | peer 10.1.11.11 as-nu 65001 | peer 10.1.62.22 as-nu 65001 | peer 10.1.62.6 as-nu 200 | ||||
| network 192.168.1.0 24 | network 172.16.1.0 24 | ||||||
| ospf 10 vpn-instance a | ospf 10 vpn-instance a | ||||||
| import bgp permit-ibgp | import bgp permit-ibgp | ||||||
| route-tag disable | route-tag disable | ||||||
| vpn-instance-capability simple | vpn-instance-capability simple | ||||||
| area 0 | area 0 | ||||||
| network 10.1.34.3 0.0.0.0 | network 10.1.34.4 0.0.0.0 | ||||||
| bgp 100 | bgp 200 | ||||||
| ipv4-family vpn-instance a | ipv4-family vpn-instance a | ||||||
| import-route ospf 10 | import-route ospf 10 | ||||||
| ip route-static vpn-instance b 172.16.1.0 24 10.2.11.1 | ip route-static vpn-instance b 192.168.1.0 24 10.2.11.11 | ospf 20 vpn-instance b | ospf 20 vpn-instance b | ||||
| bgp 100 | import bgp permit-ibgp | silent-interface loop 0 | |||||
| ipv4-family vpn-instance b | route-tag disable | ||||||
| import-route static | vpn-instance-capability simple | ||||||
| area 0 | area 0 | ||||||
| network 10.2.62.6 0.0.0.0 | network 10.2.62.22 0.0.0.0 | ||||||
| network 172.16.1.1 0.0.0.0 | |||||||
| bgp 200 | |||||||
| ipv4-family vpn-instance b | |||||||
| import-route ospf 20 | |||||||
| ip route-static vpn-instance b 172.16.1.0 24 10.2.34.4 | ip route-static vpn-instance b 192.168.1.0 24 10.2.34.3 | ||||||
| bgp 100 | bgp 200 | ||||||
| ipv4-family vpn-instance b | ipv4-family vpn-instance b | ||||||
| import-route static | import-route static |
配置完成后效果
