Trunk Ports between switches

[mrmarie]

Hello 

What the the recommended command should I apply for Trunk ports between edge switches in the below digram to avoid looping in the network.

Appreciate your help

Thanks

[Tyson Joachims]

Apply the same trunk configuration as all the other switches. Spanning tree protocol (STP) will take care of preventing loops automatically. It is best practice to run the same kind of STP throughout the whole network as to prevent odd issues.

[mrmarie]

Hello Georg,

Sorry, I mean Trunk ports between switches, so there is any configuration should I do in edge switches for spanning-tree.

Thanks

[Georg Pauwen]

Hello,

what do you mean by 'true' ports ? All ports should be trunk ports, make the core switch the root for all Vlans, and spanning tree will block one of the outgoing ports, hence avoiding a loop.

[MHM Cisco World]

Core is Root always 

link between SW2-SW3 always block 

this give you best STP config