Friday, March 29, 2019

Teach me spanning tree

What I want to accomplish I believe should be simple.

I have 3 switches. 2 switches both currently trunk to an aggregate fiber switch. This fiber switch is currently the only way the other 2 switches can communicate between each other. I want to run 10G fiber between the switches, and only allow a couple VLANs to pass traffic through that 10G trunk instead of hauling all the way to the fiber aggregate switch and back down.

RSTP will simply nuke the other connection as soon as I link that fiber betwen the two switches....functioning as it should obviously. How do I configure it to play nice?



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