Tracking HP (Compaq) LAN-adapter failover on 4506 switches

[pverstegen]

Hi,

I'm currently implementing serverfarm redundancy using HP servers teaming fault tolerant mode with each adapter connecting to a Cat.4506.

I would like to see on the switches if a failover has occured. Does anyone know how to signal such a failover ?

Peter

[Prashanth Krishnappa]

One way is to check for traffic rate using the following commands

If running IOS

sh int fastEthernet x/y counters

sh interface fasx/y

If running CAT OS

sh mac x/y

I would expect to see the in and out rate higher on whichever Link is active compared to inactive link. Also, if your redundant NIC remains fully dormant while it is inactive, check to see which switch is learning the MAC address on both switches using

If running IOS

sh mac-address-table dynamic interface fastEthernet x/y

If running CAT OS

sh cam dynamic x/y

Whichever switch has the entry would be the active link to the server.

[pverstegen]

OK, thanks. But I was wondering if there is some automation possible. For instance sending a trap when the mac-adres changes on the switchports of the primairy as well as the backup switch.

Peter