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Mixing 100Mbps and Gigabit switches

2020-06-10 by: Dan Lyke
From: Dan Lyke 
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So I just got gigabit fiber at home. Yay.

I'm using an Eero as a router. Meh. Not great, but not awful.

I have a 100Mbps POE switch and a Gigabit switch. I have a bunch of
old devices which probably have 10Mbps interfaces (solar inverter
monitor, some cameras, etc... I don't know what the T-Mobile minicell
has, but these things don't need gigabit).

I also cheaped out 8 years or so ago when I ran twisted pair to my
workshop, and a few places within the house, and those are just
100Mbps cable (is that 5e? I don't remember any more).

What are the implications of putting the 100Mbps switch downstream of
the Gigabit switch, and hanging devices off of that? Is that gonna
hammer the performance of things plugged into the Gigabit switch?

Dan



=============================================================== From: Dave Brockman ------------------------------------------------------ CAT5 is not rated for Gigabit, CAT5E is. I wouldn't advise it, but you can actually run 100Mb Ethernet over CAT3 and 66 blocks. No, switches have dedicated bandwidth to each port, unlike hubs. The other ports won't be affected by the 100Mb port. Except obviously, talking to anything on the 100Mb switch will be slower than the 1Gb ports= :) Cheers, -Dave

=============================================================== From: DaWorm ------------------------------------------------------ For short enough runs, four metal clothes hangers will work! Good luck crimping them into an RJ-45 though! Jeff