【无标题】

要求：实现全网可达

这里ip环回已提前配置好，这里r2，r5，r6配置了ibgp，

r1，r7，r8分别起了静态，rip，ospf

r2上配置

r2]mpls lsr-id 2.2.2.2
[r2]mpls
Info: Mpls starting, please wait... OK!
[r2-mpls]mpls ld
[r2-mpls-ldp]q
[r2]int g0/0/1
[r2-GigabitEthernet0/0/1]mpls 
[r2-GigabitEthernet0/0/1]mpls ldp
[r2-GigabitEthernet0/0/1]int g0/0/2
[r2-GigabitEthernet0/0/2]mpls 
[r2-GigabitEthernet0/0/2]mpls ldp
[r2]ip vpn    
[r2]ip vpn-instance 1
[r2-vpn-instance-1]rout    
[r2-vpn-instance-1]route-distinguisher 1:1
[r2-vpn-instance-1-af-ipv4]vpn     
[r2-vpn-instance-1-af-ipv4]vpn-target 5:5 6:6ex    
[r2-vpn-instance-1-af-ipv4]vpn-target 5:5 6:6 ex    
[r2-vpn-instance-1-af-ipv4]vpn-target 5:5 6:6 im    
[r2-vpn-instance-1-af-ipv4]vpn-target 5:5 6:6 import-extcommunity 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
[r2-vpn-instance-1-af-ipv4]vpn    
[r2-vpn-instance-1-af-ipv4]vpn-    
[r2-vpn-instance-1-af-ipv4]vpn-target 1:1 ex    
[r2-vpn-instance-1-af-ipv4]vpn-target 1:1 export-extcommunity 
[r2-GigabitEthernet0/0/0]ip binding vpn-instance 1     //这里需注意需要先把ip地址删除

[r2-GigabitEthernet0/0/0]ip binding vpn-instance 1

[r2-GigabitEthernet0/0/0]ip add 12.1.1.2 24               //在这里再配上ip

[r2]ip route-static vpn-instance 1 1.1.1.1 32 12.1.1.1
[r2]bgp 1
[r2-bgp]ipv4    
[r2-bgp]ipv4-family vpn    
[r2-bgp]ipv4-family vpnv    
[r2-bgp]ipv4-family vpn    
[r2-bgp]ipv4-family vpn-instance 1
[r2-bgp-1]impr    
[r2-bgp-1]impo    
[r2-bgp-1]import-route s    
[r2-bgp-1]import-route static 
[r2-bgp-1]
 

r3上配置（r4也是同样方法配置）

r3]mpls ls    
[r3]mpls lsr-id 3.3.3.3
[r3]mpls 
Info: Mpls starting, please wait... OK!
[r3-mpls]mpls ld
[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

[r3-GigabitEthernet0/0/1]int g0/0/2
[r3-GigabitEthernet0/0/2]mpls 
[r3-GigabitEthernet0/0/2]mpls ldp
[r3-GigabitEthernet0/0/2]q
[r3]
 

r5配置

[r5]mpls ls    
[r5]mpls lsr-id 5.5.5.5
[r5]mpls
Info: Mpls starting, please wait... OK!
[r5-mpls]mpls ld
[r5-mpls-ldp]q
[r5]int g0/0/0
[r5-GigabitEthernet0/0/0]mpls
[r5-GigabitEthernet0/0/0]mpls ldp
[r5-GigabitEthernet0/0/0]int g0/0/1
[r5-GigabitEthernet0/0/1]mpls
[r5-GigabitEthernet0/0/1]mpls ldp
[r5-GigabitEthernet0/0/1]

[r5]ip vpn    
[r5]ip vpn-instance 2
[r5-vpn-instance-2]rou    
[r5-vpn-instance-2]route-distinguisher 5:5
[r5-vpn-instance-2-af-ipv4]vpn    
[r5-vpn-instance-2-af-ipv4]vpn-target 1:1 6:6 in    
[r5-vpn-instance-2-af-ipv4]vpn-target 1:1 6:6 im    
[r5-vpn-instance-2-af-ipv4]vpn-target 1:1 6:6 import-extcommunity 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
[r5-vpn-instance-2-af-ipv4]vpn-    
[r5-vpn-instance-2-af-ipv4]vpn-target 5:5 ex    
[r5-vpn-instance-2-af-ipv4]vpn-target 5:5 export-extcommunity 
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[r5-vpn-instance-2-af-ipv4]q
[r5-vpn-instance-2]q
[r5]int g0/0/2
[r5-GigabitEthernet0/0/2]undo ip add
Jan  9 2023 21:19:01-08:00 r5 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
on the interface GigabitEthernet0/0/2 has entered the DOWN state. 
[r5-GigabitEthernet0/0/2]ip bin    
[r5-GigabitEthernet0/0/2]ip binding vpn    
[r5-GigabitEthernet0/0/2]ip binding vpn-instance 2
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!
[r5-GigabitEthernet0/0/2]ip add 57.1.1.1 24

[r5]rip 1 vpn-instance 2

[r5-rip-1]version 2

[r5-rip-1]network 57.0.0.0

[r5-rip-1]import-router bgp

[r5-rip-1]q

[r5]bgp 1

[r5-bgp]ipv4-family vpn-instance 2

[r5-bgp-2]import-route rip 1

r6配置

[r6]ip vpn    
[r6]ip vpn-instance 3
[r6-vpn-instance-3]rou    
[r6-vpn-instance-3]route-distinguisher 6:6
[r6-vpn-instance-3-af-ipv4]vpn    
[r6-vpn-instance-3-af-ipv4]vpn-target 1:1 5:5 im    
[r6-vpn-instance-3-af-ipv4]vpn-target 1:1 5:5 import-extcommunity 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
[r6-vpn-instance-3-af-ipv4]vpn    
[r6-vpn-instance-3-af-ipv4]vpn-    
[r6-vpn-instance-3-af-ipv4]vpn-target 6:6 ex    
[r6-vpn-instance-3-af-ipv4]vpn-target 6:6 export-extcommunity 
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[r6-vpn-instance-3-af-ipv4]q
[r6-vpn-instance-3]q
[r6]int g0/0/2

[r6-GigabitEthernet0/0/2]ip add 68.1.1.1 24

[r6]ospf 2 vpn    
[r6]ospf 2 vpn-instance 3
[r6-ospf-2]area 0
[r6-ospf-2-area-0.0.0.0]net    
[r6-ospf-2-area-0.0.0.0]network 68.1.1.1 0.0.0.0

[r6]bgp 1
[r6-bgp]ip    
[r6-bgp]ipv4-family vpn    
[r6-bgp]ipv4-family vpn    
[r6-bgp]ipv4-family vpn-instance 3
[r6-bgp-3]imp    
[r6-bgp-3]import-route ospf 2
 

 用r1 ping r7，r8