mpls实验

配置IP和OSPF，以R2为例，R3，R4也是该如此配置

sys

[Huawei]sys r2

[r2]int g0/0/1

[r2-GigabitEthernet0/0/1]ip add 23.1.1.1 24

[r2-GigabitEthernet0/0/1]int loo0

[r2-LoopBack0]ip add 2.2.2.2 24

[r2-LoopBack0]q

[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 23.1.1.0 255.255.255.0

配置MPLS域

[r2]mpls lsr-id 2.2.2.2 //必须先定义mpls的router-id，要为本地设备的真实ip地址，且邻居可达，因为该地址将用于建立TCP会话，建议使用环回地址

[r2]mpls //开启mpls协议

[r2-mpls]mpls ldp //激活LDP协议

[r2-mpls-ldp]q

[r2]int g0/0/1

[r2-GigabitEthernet0/0/1]mpls

[r2-GigabitEthernet0/0/1]mpls ldp

[r3]mpls lsr-id 3.3.3.3

[r3]mpls

[r3-mpls]mpls ldp

[r3-mpls-ldp]q

[r3]int g0/0/0

[r3-GigabitEthernet0/0/0]mpls

[r3-GigabitEthernet0/0/0]mpls ldp

[r3-GigabitEthernet0/0/0]int g0/0/1

[r3-GigabitEthernet0/0/1]mpls

[r3-GigabitEthernet0/0/1]mpls ldp

[r4]mpls lsr-id 4.4.4.4

[r4]mpls

[r4-mpls]mpls ldp

[r4-mpls-ldp]q

[r4]int g0/0/0

[r4-GigabitEthernet0/0/0]mpls

[r4-GigabitEthernet0/0/0]mpls ldp

配置MPLS、VPN

[r2]ip -instance b1 //创建名为b1的vrf空间

[r2--instance-b1]ipv4-family //进入IPV4的配置模式下

[r2--instance-b1-af-ipv4]route-distinguisher 1:1 //RD值

[r2--instance-b1-af-ipv4]-target 1:1 //RT值 必须对端的PE端一致

[r2--instance-b1-af-ipv4]q

[r2--instance-b1]q

[r2]int g0/0/0 //进入链接CE端的接口

[r2-GigabitEthernet0/0/0]ip binding -instance b1 //关联到vrf空间

[r2-GigabitEthernet0/0/0]ip add 172.16.2.2 24 //配置私有ip地址

[r1]int g0/0/0

[r1-GigabitEthernet0/0/0]ip add 172.16.2.1 24

[r1-GigabitEthernet0/0/0]int loo0

[r1-LoopBack0]ip add 192.168.1.1 24

R4和R5配置

[r4]ip -instance b2

[r4--instance-b2]ipv4-family

[r4--instance-b2-af-ipv4]route-distinguisher 1:1

[r4--instance-b2-af-ipv4]-target 1:1

[r4--instance-b2-af-ipv4]q

[r4--instance-b2]q

[r4]int g0/0/1

[r4-GigabitEthernet0/0/1]ip binding -instance b2

[r4-GigabitEthernet0/0/1]ip add 172.16.3.1 2

[r5]int g0/0/0

[r5-GigabitEthernet0/0/0]ip add 172.16.3.2 24

[r5-GigabitEthernet0/0/0]int loo0

[r5-LoopBack0]ip add 192.168.4.1 24

PE与PE间建立MP-BPG邻居关系

[r2]bgp 2

[r2-bgp]router-id 2.2.2.2 //先和对端建立正常BGP邻居关系，可用于传递正常的公网路由

[r2-bgp]peer 3.3.3.3 as-number 2

[r2-bgp]peer 3.3.3.3 connect-interface l0

[r2-bgp]peer 3.3.3.3 next-hop-local

[r2-bgp]peer 4.4.4.4 as-number 2

[r2-bgp]peer 4.4.4.4 next-hop-local

[r2-bgp]peer 4.4.4.4 connect-interface LoopBack 0

同时还需要再在IPV4的家族模式中，与对端建立一个VPNV4的关系，用于传递VPNV4路由

[r2-bgp]ipv4-family v4

[r2-bgp-af-v4]peer 4.4.4.4 enable

[r3-bgp]peer 2.2.2.2 as-number 2

[r3-bgp]peer 2.2.2.2 next-hop-local

[r3-bgp]peer 2.2.2.2 connect-interface LoopBack 0

[r3-bgp]peer 4.4.4.4 as-number 2

[r3-bgp]peer 4.4.4.4 connect-interface LoopBack 0

[r3-bgp]peer 4.4.4.4 next-hop-local

[r4]bgp 2

[r4-bgp]router-id 4.4.4.4

[r4-bgp]peer 2.2.2.2 as-number 2

[r4-bgp]peer 2.2.2.2 next-hop-local

[r4-bgp]ipv4-family v4

[r4-bgp-af-v4]peer 2.2.2.2 enable

[r4-bgp]peer 3.3.3.3 as-number 2

[r4-bgp]peer 3.3.3.3 next-hop-local

[r4-bgp]peer 3.3.3.3 connect-interface lo0

CE端与PE端交互路由

[r2]ip route-static -instance b1 192.168.1.0 24 192.168.2.1

[r2]bgp 2

[r2-bgp]ipv4-family v4

[r2-bgp-af-v4]q

将本地vrf空间内的静态和直连路由重发布到BGP协议传递到对端的PE

[r2-bgp]ipv4 -instance b1

[r2-bgp-b1]import-route static

[r2-bgp-b1]import-route direct

[r1]ip route-static 192.168.4.0 255.255.255.0 172.16.2.2 //CE端只需写静态

[r4]ip route-static -instance b2 192.168.4.0 24 172.16.3.2

[r4]bgp 2

[r4-bgp]ipv4 -instance b2

[r4-bgp-b2]import-route static

[r4-bgp-b2]import-route direct

[r5]ip route-static 192.168.1.0 255.255.255.0 172.16.3.1

R6和R2之间配置

[r6]int g0/0/0

[r6-GigabitEthernet0/0/0]ip add 172.16.2.1 24

[r6-GigabitEthernet0/0/0]int loo0

[r6-LoopBack0]ip add 192.168.1.1 24

[r2]ip -instance a1

[r2--instance-a1]ipv4-family

[r2--instance-a1-af-ipv4]route-distinguisher 2:2

[r2--instance-a1-af-ipv4]-target 2:2

[r2--instance-a1-af-ipv4]q

[r2--instance-a1]q

[r2]int g0/0/2

[r2-GigabitEthernet0/0/2]ip binding -instance a1

[r2-GigabitEthernet0/0/2]ip add 172.16.2.2 24

rip配置

[r6]rip

[r6-rip-1]version 2

[r6-rip-1]network 192.168.1.0

[r6-rip-1]network 172.16.0.0

[r2]rip vp

[r2]rip -instance a1

[r2]rip -instance a1

[r2-rip-1]ver 2

[r2-rip-1]network 172.16.0.0

rip重发布到BGP

[r2]bgp 2

[r2-bgp]ipv4-family -instance a1

[r2-bgp-a1]import-route rip 1

BGP重发布到RIP

[r2]rip 1 -instance a1

[r2-rip-1]import-route bgp

R4和R7之间配置

[r7]int g0/0/0

[r7-GigabitEthernet0/0/0]ip add 45.1.1.2 24

[r7-GigabitEthernet0/0/0]int g0/0/1

[r7-GigabitEthernet0/0/1]ip add 172.16.3.2 24

[r7-GigabitEthernet0/0/1]int loo0

[r7-LoopBack0]ip add 192.168.4.2 24

[r7]ospf 1 router-id 7.7.7.7

[r7-ospf-1]area 0

[r7-ospf-1-area-0.0.0.0]network 192.168.4.0 255.255.255.0

[r7-ospf-1-area-0.0.0.0]network 172.16.3.0 255.255.255.0

[r7-ospf-1-area-0.0.0.0]network 45.1.1.0 255.255.255.0 //配置一条用户可上网的路由

[r4]ip -instance a2

[r4--instance-a1]ipv4-family

[r4--instance-a1-af-ipv4]route-distinguisher 2:2

[r4--instance-a1-af-ipv4]-target 2:2

[r4]int g4/0/0

[r4-GigabitEthernet4/0/0]ip binding -instance a2

[r4-GigabitEthernet4/0/0]ip add 172.16.3.1 24

[r4-ospf-1-area-0.0.0.0]network 45.1.1.0 255.255.255.0

[r4]ospf 2 -instance a2 //这里需要注意是进程号为2

[r4-ospf-2]area 0

[r4-ospf-2-area-0.0.0.0]network 172.16.3.0 255.255.255.0

之后使用双向重发布，实现路由共享

[r4]bgp 2

[r4-bgp]ipv4-family -instance a2

[r4-bgp-a]import-route ospf 2

[r4]ospf 2 -instance a2

[r4-ospf-2]import-route bg