Subinterface IP problem

[nmdc.kzstan]

Hi,

C2921 ISR router has three subinterfaces connected to the same ISP:  Gi0/0.3200 and Gi0/2.3200 in VRFs, Gi0/1.3200 in global router.

Problem is Gi0/1.3200 gets IP addresses of other 2 subinterfaces in VRFs. If I shutdown GigabitEthernet0/0.3200 I can stiil ping IP address aa.bb.232.90.

sh arp
Internet  aa.bb.232.82            -   78da.6e31.edf1  ARPA   GigabitEthernet0/1.3200
Internet  aa.bb.232.84            -   78da.6e31.edf1  ARPA   GigabitEthernet0/1.3200
Internet  aa.bb.232.90            -   78da.6e31.edf1  ARPA   GigabitEthernet0/1.3200

sh arp vrf C1
Internet  aa.bb.232.90            -   78da.6e31.edf0  ARPA   GigabitEthernet0/0.3200

sh arp vrf X1
Internet  aa.bb.232.82            -   78da.6e31.edf2  ARPA   GigabitEthernet0/2.3200

interface GigabitEthernet0/0.3200
 encapsulation dot1Q 3200
 ip vrf forwarding C1
 ip address aa.bb.232.90 255.255.255.224
 ip nat outside
 ip virtual-reassembly in
 

interface GigabitEthernet0/1.3200
 encapsulation dot1Q 3200
 ip address aa.bb.232.84 255.255.255.224
 no cdp enable

interface GigabitEthernet0/2.3200
 encapsulation dot1Q 3200
 ip vrf forwarding X1
 ip address aa.bb.232.82 255.255.255.224
 ip nat outside
 ip virtual-reassembly in
 no cdp enable
 

[Akash Agrawal]

Please share complete running config of the router and output of "show ip int brief"

Regards,

Akash

[Joseph Nelson]

Do all of these interfaces connect to the same switch? If they do then you are just bridging the VRFs together with the external switch. If the interfaces are connected to the same switch, then each VRF should have a unique VLAN tag.

More details please...