GRE结合VRF配置

msr1 1口（vrf1）-----1口 msr2 0口-----1口 msr3 loop0（vrf2）

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ip vpn-instance 1 

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ip route-static vpn-instance 1 0.0.0.0 0 12.1.1.2

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interface GigabitEthernet0/1

 ip binding vpn-instance 1

 ip address 12.1.1.1 255.255.255.0

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interface Tunnel0 mode gre

 ip address 192.168.1.1 255.255.255.0 

 ospf 1 area 0.0.0.0 

 source 12.1.1.1 

 destination 23.1.1.3 

 tunnel vpn-instance 1 

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[H3C-Tunnel0]dis ospf peer

 OSPF Process 1 with Router ID 192.168.1.1

 Neighbor Brief Information

Area: 0.0.0.0 

 Router ID  Address      Pri   Dead-Time State Interface 

   4.4.4.4     192.168.1.2   1      39              Full/ - Tun0

[H3C-Tunnel0]dis ip rou

Destinations : 13 Routes : 13

Destination/Mask   Proto Pre Cost NextHop Interface

0.0.0.0/32     Direct 0 0   127.0.0.1   InLoop0

4.4.4.4/32      O_INTRA 10 1562 192.168.1.2 Tun0

MSR3

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ip vpn-instance 2

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ip route-static 0.0.0.0 0 23.1.1.2 

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interface GigabitEthernet0/1

 ip address 23.1.1.3 255.255.255.0 

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interface Tunnel1 mode gre 

 ip binding vpn-instance 2

 ip address 192.168.1.2 255.255.255.0 

 ospf 2 area 0.0.0.0 

 source 23.1.1.3

 destination 12.1.1.1

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interface LoopBack0 

 ip binding vpn-instance 2 

 ip address 4.4.4.4 255.255.255.0 

 ospf 2 area 0.0.0.0 

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[H3C-LoopBack0]dis ospf peer

 OSPF Process 2 with Router ID 4.4.4.4

 Neighbor Brief Information

Area: 0.0.0.0

Router ID Address Pri Dead-Time State Interface

192.168.1.1 192.168.1.1 1 37 Full/ - Tun1