Connecting two desktop switches with more than one cable?

Code Jockey asked:

I was hoping to find a way to increase bandwidth between two desktop switches I have, and I wondered if connecting them with two cables (or perhaps three) instead of just one might increase theoretical bandwidth (which I am currently not in danger of saturating yet anyways)

From this question (2 ethernet connections between two Switches), I kind of assume I can’t do what I hope to do, but I would love specific confirmation.

I assume typical cheap desktop switches would be unmanaged and thus useless and/or self-defeating when connecting them with more than one cable and trying to create a little more bandwidth between them.

Is this one of the differences between managed and unmanaged switches? And if I had managed switches, would it work (connect them with two cables to essentially double the bandwidth)?

My answer:


Yes, you can do this, if both switches support link aggregation (which goes by a variety of names such as bonding, NIC teaming, port trunking, etc.). You’re unlikely to find this feature in consumer grade hardware or unmanaged switch.

The answer to the question you referred to even specifically mentioned LACP, one common protocol for link aggregation.


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