01-13-2006 02:09 AM - edited 03-03-2019 01:25 AM
Hi everybody,
My customer had a problem yesterday.
In fact, he has 1 Catalyst 4507 and suddenly the Catalyst 4507 lost his vlan configuration (only the vlans configuration).
The catalyst 4507 and the others switches connected are configured as VTP server but with a vtp password.
On the 4507 IOS there is no vlan.dat file on the flash.
So, I don't understand what happened.
Anyone has an idea what could be the reasons ?
Thank you for your help.
01-13-2006 02:30 AM
Hi Friend,
Can you confirm if 4507 is running redundant supervisor engines and did the active went down and standby tookover?
Regards,
Ankur
01-13-2006 07:32 AM
Hi Ankur,
Yes, there are two supervisor engines and I suspect that the standby supervisor took over.
Do you think that there is a relationship ?
Regards,
01-13-2006 05:48 AM
Hello,
what is the IOS version of 4507 ? (bug?)
when the behaviour occurs, is there an insertion of new switches ?
Regards.
01-13-2006 04:03 PM
The VLAN database is not stored on the flash, it is stored on:
Directory of cat4000_flash:/
1 -rw- 676
Don't know if you've taken a look there.
Usually something like that would happen if a new switch, with a higer VTP Configuration Revision, but an empty vlan database, is connected into the network.
01-16-2006 12:43 AM
The IOS version of the two sup are 12.1(19)EW.
I don't think that there is a bug with this IOS version but I'm not sure.
My customer said me that there wasn't any new switch connected.
What do you think if I propose to configure all the switches in VTP transparent mode ?
At the moment there are in VTP server with a VTP password.
Thank you by advance if you have any other suggestion.
Regards.
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