I'm currently running a simple VTP domain with four swicthes (as attached). And would like some advice on VTP pruning.
My understanding is I would enable it for the whole VTP Domain on my server switch using the command below?
VTP_Server_Sw1(config)# vtp pruning
I have also read about pruning on the trunk links using this command?
VTP_Server_Sw1(config-if)#switchport trunk pruning vlan [Word] [add] [except]
If i did this am i right in thinking i just need to specify the VLANs carried trunk link on the trunk ?
So for switch 1 i'd just need to specify Vlan 2, Switch 2 Vlan 3 and Switch 3 Vlan 4?
Also should I enter the command at both ends of the trunk?
I personally would consider it when:-
1) I have more that 5 switches
2) I have a core/distribution/access topology
3) My topology is not flat and collapsed (1 core and 3 access switches)
At the end of the day pruning is used to improve LAN performance by cutting down on broadcast, multicast, unknown, and flooded unicast packets.
If your LAN is designed and configured to avoid these types of issues - then you will not need to prune, in my opionion.