If you put it on L3, all the Layer2 traffic like STP, VTP between the core switches will be forwraded through the access layer trunks. The advantage here for you will be that you will have 3 different Layer3 paths for forwarding your traffic between the switches and core routers. And if you are running any La3 protocol it will be able to send the traffic it across all the available paths.
If you have a layer 2 link, all the Layer2 traffic will be sent directly between the core switches and it doesnot have to go through the access layer trunks.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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