[c-nsp] WS-C2970G-24TS as access switches

Mack McBride mack.mcbride at viawest.com
Wed Dec 28 13:49:21 EST 2011

The 2970 series also had issues with electrical imbalances.
These really need to be chassis grounded where other switches aren't as sensitive.
<sarcasm>Not that anyone ever fails to attach grounding cables to switches.</sarcasm>
If you are running more than one Ethernet cable to the same device from the 2970 you can have issues
with the poor handling of imbalances.

LR Mack McBride
Network Architect

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Joe Maimon
Sent: Wednesday, December 28, 2011 8:19 AM
To: Nikolay Shopik
Cc: cisco-nsp
Subject: Re: [c-nsp] WS-C2970G-24TS as access switches

Nikolay Shopik wrote:
> I've noticed WS-C2970G-24TS actually 1,5U, while other model just 1U. 
> So I wonder if there any overheating issues?

The physical design appears to be the same as 3550-12G and some of the 3750.

The extra height is taken up by the PS and 2 fans which are on their own shelf, as there is no room behind the mainboard, since the mainboard is deeper.

This is 1 more fan then many of the 1U switches have.

Overheating hasnt been a problem. They all run from warm to hot to the touch, from the 3500/2950 and up. Your servers will complain well before the switch does.

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