接口绑定VRF后，bgp邻居不能起来

R1、R2、R3建立ospf邻居，R1宣告环回口L0地址，R3宣告环回口L0地址；R1环回口和G0/0口绑定VRF：h3c，R1与R3使用环回口建立BGP邻居，发现BGP邻居不能建立，拓扑和配置如下：

R1:

ip vpn-instance h3c

 route-distinguisher 1000:2

#

ospf 1 vpn-instance h3c

 area 0.0.0.0

  network 1.1.1.0 0.0.0.3

  network 100.1.1.1 0.0.0.0

#

interface LoopBack0

 ip binding vpn-instance h3c

 ip address 100.1.1.1 255.255.255.255

#              

interface GigabitEthernet0/0

 port link-mode route

 combo enable copper

 ip binding vpn-instance h3c

 ip address 1.1.1.1 255.255.255.252

#

bgp 100        

 #             

 ip vpn-instance h3c

  peer 100.2.2.2 as-number 100

  #            

  address-family ipv4 unicast

   peer 100.2.2.2 enable

R2:

ospf 1

 area 0.0.0.0

  network 1.1.1.0 0.0.0.3

  network 2.2.2.0 0.0.0.3

#

#              

interface GigabitEthernet0/0

 port link-mode route

 combo enable copper

 ip address 1.1.1.2 255.255.255.252

#              

interface GigabitEthernet0/1

 port link-mode route

 combo enable copper

 ip address 2.2.2.1 255.255.255.252

#

R3:

ospf 1

 import-route direct

 area 0.0.0.0

  network 2.2.2.0 0.0.0.3

#

#

interface LoopBack0

 ip address 100.2.2.2 255.255.255.255

#

interface GigabitEthernet0/0

 port link-mode route

 combo enable copper

 ip address 2.2.2.2 255.255.255.252

#

bgp 100

 peer 100.1.1.1 as-number 100

 peer 100.1.1.1 connect-interface LoopBack0

 #

 address-family ipv4 unicast

  peer 100.1.1.1 enable

#