06-17-2009 06:47 AM - edited 03-06-2019 06:18 AM
Hi all,
If two switch is configured as server mode with same vtp domain (ABC) but different Configuration Revision and going to be connected together.
Is it the largest configuration revision switch (Switch-2) will be the Active role so that it will copy all Vlan information to Switch-1
or
they will copy all Vlan each other
Switch-1# sh vtp status
VTP Version : 2
Configuration Revision : 200
Maximum VLANs supported locally : 254
Number of existing VLANs : 11
VTP Operating Mode : Server
VTP Domain Name : ABC
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
Switch-2# sh vtp status
VTP Version : 2
Configuration Revision : 250
Maximum VLANs supported locally : 254
Number of existing VLANs : 100
VTP Operating Mode : Server
VTP Domain Name : ABC
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
06-17-2009 06:55 AM
Yes the server that has the highest revision will overwrite the other servers vlan database .
06-17-2009 06:56 AM
Jack
The switch with the highest configuration revision number will overwrite the vlan database of the lower switch.
Jon
06-17-2009 01:17 PM
... and that's exactly the reason why you have to be CAREFUL when working with VTP in server/client mode, as you will be able to shut your whole entwork down accidentially in the case where you put on a switch to the entwork with a higher revision number than your current VTP server and the new switch has only a few VLAN present.
HTH
06-17-2009 02:39 PM
For a VTP Server to over-write another, you have to have a higher revision number but also the same Domain Name and the the same Password. If the password is incorrect, the database will not be copied across.
06-21-2009 12:21 PM
Good point regarding the VTP password.
This one can be seen with the "show vtp password" command - it is not seen in the "show vtp status" output.
HTH.
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