I currently have 1 switch at our two buildings connected via dark fiber. They use one port for ISL between the two sites. I now need to add an additional switch at each site into the same fabric.
I think it would make sense to connect say, port 1 from the top switch to the bottom one. And I currently use port 24 for the ISL on the original switch I would like to do this for the new switch as well, this would basically make a ring topology (which I'm not sure if it would work correctly) ideally this would allow the traffic to flow either way.
I was reading about ISL trunking would this work or be appropriate for this? Any direction/help is appreciated as well as any info on how to connect the switches together.