mpls实验

 解题思路：

1.先配置公有IP地址，用ospf使公有区域相互可达，再到 R7 的0/0/0口上宣告一条缺省指向公有网络

2.在R3\4\5上启动 MPLS 协议

3.在R3与R5上建立 IBGP 邻居关系，然后分别在R3、R5上创建 VRF空间

R3、R5 与 R1、R6建立的VRF为一个空间 a

R3、R5 与 R2、R7建立的VRF为一个空间 b

4.到R1\R6上写静态路由

5.在 R3\R5 上分别进入到对应的 VRF空间内，写缺省，分别指向R1\R6的环回地址，在R3\R5俩台路由器的VPN域内都施行重发布协议

6.R2\7上分别以 RIP 和 OSPF 协议进行IP地址宣告，R2\7宣告时不用进入到VRF空间内就可以

7.R3\5上进入对应的 VRF空间内，使用相同的 IP 宣告协议，只宣告本地与私网之间连线的IP网，再到R3\5上进入VRF空间内，输入重发布协议
 

R1：

[r1]interface g0/0/0
[r1-GigabitEthernet0/0/0]ip add 192.168.2.1 24
[r1-GigabitEthernet0/0/0]int l0
[r1-LoopBack0]ip add 192.168.1.1 24
[r1]ip route-static 192.168.3.0 255.255.255.0 192.168.2.2
[r1]ip route-static 192.168.4.0 255.255.255.0 192.168.2.2

R2

[r2]ip vpn-instance  a1
[r2-vpn-instance-a1]route-distinguisher 2:2
[r2-vpn-instance-a1-af-ipv4]vpn-target 2:2 export-extcommunity 
[r2-vpn-instance-a1-af-ipv4]vpn-target 2:2 import-extcommunity 
[r2]ip vpn-instance b1
[r2-vpn-instance-b1]ipv4-family 
[r2-vpn-instance-b1-af-ipv4]route-distinguisher 1:1
[r2-vpn-instance-b1-af-ipv4]vpn-target 1:1 export-extcommunity 
[r2-vpn-instance-b1-af-ipv4]vpn-target 1:1 import-extcommunity 
[r2]mpls lsr-id 2.2.2.2
[r2]mpls 
[r2]mpls ldp
[r2-mpls-ldp]int g0/0/1
[r2-GigabitEthernet0/0/1]ip add 23.1.1.1 24
[r2-GigabitEthernet0/0/1]mpls 
[r2-GigabitEthernet0/0/1]mpls ldp 
[r2-GigabitEthernet0/0/1]int g0/0/0
[r2-GigabitEthernet0/0/0]ip binding vpn-instance b1
[r2-GigabitEthernet0/0/0]ip add 192.168.2.2 24
[r2-GigabitEthernet0/0/0]int g0/0/2
[r2-GigabitEthernet0/0/2]ip binding vpn-instance a1
[r2-GigabitEthernet0/0/2]ip add 192.168.2.2 24
[r2-GigabitEthernet0/0/2]int l0
[r2-LoopBack0]ip add 2.2.2.2 32
[r2]bgp 1
[r2-bgp]router-id 2.2.2.2
[r2-bgp]peer 4.4.4.4 as-number 1
[r2-bgp]peer  4.4.4.4 connect-interface LoopBack 0
[r2-bgp]ipv4-family unicast 
[r2-bgp-af-ipv4]undo synchronizatio
[r2-bgp-af-ipv4]peer 4.4.4.4 enable 
[r2-bgp]ipv4-family vpnv4
[r2-bgp-af-vpnv4]policy vpn-target 
[r2-bgp-af-vpnv4]peer 4.4.4.4 enable 
[r2-bgp]ipv4-family vpn-instance a1
[r2-bgp-a1]import-route rip 1
[r2-bgp]ipv4-family vpn-instance b1
[r2-bgp-b1]import-route direct 
[r2-bgp-b1]import-route static 
[r2]ospf 1 router-id  2.2.2.2
[r2-ospf-1]area 0.0.0.0
[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 23.1.1.1 0.0.0.0
[r2]rip 1 vpn-instance a1
[r2-rip-1]undo summary 
[r2-rip-1]version 2
[r2-rip-1]network 192.168.2.0 
[r2-rip-1]import-route bgp 
[r2]ip route-static vpn-instance b1 192.168.1.0 255.255.255.0 192.168.2.1

R3

[r3]mpls lsr-id 3.3.3.3
[r3]mpls ldp 
[r3-mpls-ldp]int g0/0/0
[r3-GigabitEthernet0/0/0]ip add 23.1.1.2 24
[r3-GigabitEthernet0/0/0]mpls 
[r3-GigabitEthernet0/0/0]mpls ldp 
[r3-GigabitEthernet0/0/0]int g0/0/1
[r3-GigabitEthernet0/0/1]ip add 34.1.1.1 24
[r3-GigabitEthernet0/0/1]mpls 
[r3-GigabitEthernet0/0/1]mpls ldp
[r3-GigabitEthernet0/0/1]int l0
[r3-LoopBack0]ip add 3.3.3.3 32
[r3]ospf 1 router-id  3.3.3.3
[r3-ospf-1]area 0.0.0.0
[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 23.1.1.2 0.0.0.0
[r3-ospf-1-area-0.0.0.0]network 34.1.1.1 0.0.0.0

R4

[r4]ip vpn-instance a1    
[r4-vpn-instance-a1]ipv4-family 
[r4-vpn-instance-a1-af-ipv4]route-distinguisher 2:2
[r4-vpn-instance-a1-af-ipv4]vpn-target 2:2 export-extcommunity 
[r4-vpn-instance-a1-af-ipv4]vpn-target 2:2 import-extcommunity 
[r4]ip vpn-instance b1
[r4-vpn-instance-b1]ipv4-family
[r4-vpn-instance-b1-af-ipv4]route-distinguisher 1:1
[r4-vpn-instance-b1-af-ipv4]vpn-target 1:1 export-extcommunity 
[r4-vpn-instance-b1-af-ipv4]vpn-target 1:1 import-extcommunity 
[r4]mpls lsr-id 4.4.4.4     
[r4]mpls 
[r4]mpls ldp 
[r4-mpls-ldp]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add 34.1.1.2 24
[r4-GigabitEthernet0/0/0]mpls 
[r4-GigabitEthernet0/0/0]mpls ldp 
[r4-GigabitEthernet0/0/0]int g0/0/1
[r4-GigabitEthernet0/0/1]ip binding vpn-instance b1
[r4-GigabitEthernet0/0/1]ip add 192.168.3.2 24
[r4-GigabitEthernet0/0/1]int g0/0/2
[r4-GigabitEthernet0/0/2]ip binding  vpn-instance  a1
[r4-GigabitEthernet0/0/2]ip add 192.168.3.2 24
[r4-GigabitEthernet0/0/2]int g4/0/0
[r4-GigabitEthernet4/0/0]ip add 47.1.1.1 24
[r4]int l0
[r4-LoopBack0]ip add 4.4.4.4 32
[r4]bgp 1
[r4-bgp]router-id 4.4.4.4
[r4-bgp]peer 2.2.2.2 as-number 1
[r4-bgp]peer  2.2.2.2 connect-interface LoopBack 0
[r4-bgp]ipv4-family unicast 
[r4-bgp-af-ipv4]undo  synchronization 
[r4-bgp-af-ipv4]peer 2.2.2.2
[r4-bgp-af-ipv4]peer 2.2.2.2 enable 
[r4-bgp]ipv4-family vpnv4
[r4-bgp-af-vpnv4]policy vpn-target 
[r4-bgp-af-vpnv4]peer 2.2.2.2 enabl
[r4-bgp]ipv4-family vpn-instance a1
[r4-bgp-a1]import-route ospf 2
[r4-bgp]ipv4-family vpn-instance b1
[r4-bgp-b1]import-route direct 
[r4-bgp-b1]import-route static 
[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]area 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network  4.4.4.4 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 34.1.1.2 0.0.0.0
[r4]ospf 2 router-id  4.4.4.4 vpn-instance a1
[r4-ospf-2]import-route bgp 
[r4-ospf-2]area 0.0.0.0
[r4-ospf-2-area-0.0.0.0]network 192.168.3.2 0.0.0.0
[r4]ip route-static vpn-instance a1 192.168.4.0 255.255.255.0 192.168.3.1
[r4]ip route-static vpn-instance b1 192.168.4.0 255.255.255.0 192.168.3.1

R5

[r5]int g0/0/0
[r5-GigabitEthernet0/0/0]ip add 192.168.3.1 24
[r5-GigabitEthernet0/0/0]int l0
[r5-LoopBack0]ip add 192.168.4.1 24
[r5]ip route-static 192.168.1.0 255.255.255.0 192.168.3.2
[r5]ip route-static 192.168.2.0 255.255.255.0 192.168.3.2

R6

[r6]int g0/0/0
[r6-GigabitEthernet0/0/0]ip add 192.168.2.1 24
[r6-GigabitEthernet0/0/0]int l0
[r6-LoopBack0]ip add 192.168.1.1 24
[r6]rip 1
[r6-rip-1]undo summary 
[r6-rip-1]version 2
[r6-rip-1]network 192.168.1.0
[r6-rip-1]network  192.168.2.0

R7

[r7]int g0/0/0
[r7-GigabitEthernet0/0/0]ip add 192.168.3.1 24
[r7-GigabitEthernet0/0/0]int g0/0/1
[r7-GigabitEthernet0/0/1]ip add 47.1.1.2 24
[r7-GigabitEthernet0/0/1]int l0
[r7-LoopBack0]ip add 192.168.4.2 24
[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]area 0.0.0.0
[r7-ospf-1-area-0.0.0.0]network 192.168.3.1 0.0.0.0
[r7-ospf-1-area-0.0.0.0]network 192.168.4.2 0.0.0.0
[r7]ip route-static 0.0.0.0 0.0.0.0 192.168.3.2