Why would you not want to configure it on both sides?
My answer would be to do it on both sides.
Ive never set it up in a lab this way, but I imagine that traffic from vlans that are allowed on one side would pass that interface successfully, only to be denied on the other end. Wasted bandwidth on your trunk.
Your trunks should be configured identical on each end. If they aren't and a connection is made between two access switches a loop will occur that might not be detected.
If you are certain and can guarantee that a link will never be made between two access switches then you should be OK. However the extra few minutes of configuration it will take to correct each side of the trunks is negligable and resolves the issue before it ever happens.
Also if running vtp if you don't prune off on the access side the switch will still allocate spanning tree resources for any vlan in the vlan database. This can be a problem on smaller switches hooked into cores running dozens of vlans as switches like the 2950 have limitations on the amount of spanning tree instances it can allocate .
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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