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Connecting two 3com 2920-SFP switches

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#1 frankWhite12


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Posted 25 July 2018 - 03:18 AM

Hey guys, just looking for a little advice.
I'm adding a 2nd 3com 2920-SFP switch to our network, and was wondering how to connect them up in series(?) for more available user ports.
They have 4 SFP ports, and wanted to know if this was how its done. i use the SFP ports if you need every LAN port; however, a cheaper way is to just connect the two switches with a network cable to each other. is it work? 

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#2 toofarnorth


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Posted 26 July 2018 - 07:06 PM


Oldies but goodies :)

Connecting them in series would work just fine.
Depending on network load you might run into capacity problems between the switches.

It is smart to make an aggregated bundle of 2 ports between the switches.
This would remove the single port link bottleneck.

You could do this with the SFP ports but the price for the optics will probably be a bit high.
I presume the 3Coms will use HP coded optics should you choose to pursue this further.

Personally I would just sacrifice 2 regular ports for this and be done with it.


Or you could get a new 48 port switch. These days they barely cost any money at all.
EG: HPE 1920S 48G, Zyxel 1920-48, Netgear GS748T or D-Link DGS1210-48




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