6509 vlan configuration missing

[prashant.hegde]

After a abrupt power cylce of 6509 switch, vlan configuration got missing. Switch has not crashed. wanted info on the cause if some one has come across such situation.

[vijay.swaminathan]

Hi Prashant,

Typically all vlan related configuration will reside on the vlan.dat file which will be in NVRAM.

Do you see this file?

Also, is VTP running? if so, what mode was it on earlier ?

Also was their any topology change recently which would have caused to overwrite the Vlan configuration?

Thanks,

-Vijay

[prashant.hegde]

VTP is transparent. Only one vlan(L2) of around 30 vlans was missing. There was no change in topology. There was a issue in power source due to which the switch rebooted. Configurations were saved and this vlan is been into exsistance since a year or more.

[Sandeep Choudhary]

Hi Prashant,

Did you enter this vlan(which is missing) in the VLAN Database of the switch???

Regards

Please rate if it helps.

[prashant.hegde]

Yes, Services were restored after re-entering the configuration. Wanted to know if any command to be executed to check for the misbehaviour.