i have quick question i have 3548 aqnd 2950 switch how can i reset the config revision number to lower one.
You only actually need to change to VTP transparent mode and then back again and that should reset the revision number.
changing the VTP domain name and changing the vtp mode to transparent can do the job.
when you assign again the original VTP domain name with the device in standalone (no trunks to production) you can see in sh vtp status a rev number =0
you need also to se the VTP mode to the desired mode
Hope to help