Why do VTP in the data center? I have absolutely no explanation for this, it is generally just a bad idea to use VTP to begin with. Perhaps “easy” is one argument, but look at the problems you face with it:
- Rogue switch with higher revision can screw the network
- ON some IOS versions, if not all, the VLAN configuration doesn’t reside in the startup-config
- Rogue switch can be used to gather VLAN information on the network, helping form an inside attack
In a data center you expect a highly available, reliable, and secure computing environment, this is something VTP simply doesn’t offer for a network in the data center. Look at the Nexus lineup, VTP is a feature which is disabled by default! What a great concept, finally! I’ll go ahead and just say it, if you’re using VTP in the data center, you’re just being lazy.