[c-nsp] Problem using SNMPget for ipAdEntIfIndex and IfIndex (7600, 3660, 7200)

[Anton Smith]

Hi all, the following is on behalf of a work mate:

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Problem using SNMPget for ipAdEntIfIndex and IfIndex on Cisco 
7600/3660/7200:

It regards getting information on what ipaddress is connected to what 
interface.
I use ipAdEntIfIndex to find out what ipaddress goes with what ifIndex.
Example: IP-MIB::ipAdEntIfIndex.10.10.10.10 = INTEGER: 111
Here I've connectect an interface to a VRF called for example A, and 
configure the ipaddress 10.10.10.10 with whatever mask.
This ipaddress in configured on an  interface I call Loopback660.

Now if I create another interface called Loopback661 and connect it to 
another VRF B, but with the same IP address 10.10.10.10, the oid changes 
to: IP-MIB::ipAdEntIfIndex.10.10.10.10 = INTEGER: 112
And the other oid disappears. So it’s overwritten.
Now I have two interfaces on different VRF’s with the same IPaddress.

The configuration works fine of course, but when I try to manage my 
IPaddress list through SNMP I have problems distinguishing between two 
interfaces.

What I'm trying to do is to input the ipaddress 10.10.10.10 and find out 
what interface it is connected to.


Any information on what I could do to fix this?

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Regards,
Anton