[AusNOG] Cisco 10Gb switches

Beeson, Ayden abeeson at csu.edu.au
Tue Feb 19 13:50:32 EST 2019

MGig will go all the way up to 10gbps if the device at both ends supports it, I’m using it right now for that purpose. Some devices don’t support it however, our 3802 APs will only go up to 5gbps, whereas the 3560 and 3850 mgig models will do 10 between each other.

It is surprising how far it’ll go on older cabling while still maintaining pretty good speeds, but we also prefer to go for fixed 10gbps services like twinax or SFP+ optics where possible, it is just easier to guarantee a certain level of quality.

I’d imagine Cameron has a specific end user device/devices he needs to get going over copper away from the switching gear, hence the specific request…


From: AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of simon thomason <sapage at sapage.net>
Date: Tuesday, 19 February 2019 at 9:59 am
To: Cameron Lowe <cameron at cameronlowe.com>
Cc: "AusNOG at lists.ausnog.net" <AusNOG at lists.ausnog.net>
Subject: Re: [AusNOG] Cisco 10Gb switches

Unless things have changed running 10G over copper comes with a lot of caveats.

  *   Higher power requirements, therefore additional cooling.
  *   Overheating.
  *   Cross talk on pairs.
  *   Additional latency on those links up to 10X <<< would this fit your needs?
What cabling runs are you looking at and do you expect to use the full 10G?

As a few people have pointed out you can use mgig up to 5G a second over catbalh.

if you are looking at 10M or less I would be looking at twinax cables.

Just a few thoughts.

On Fri, Feb 15, 2019 at 2:16 PM Cameron Lowe <cameron at cameronlowe.com<mailto:cameron at cameronlowe.com>> wrote:

My google fu is failing me. Does anyone have any recommendations for Cisco 10Gb switches? They must have 10Gb over Cat6 (not my decision) and run some variant of ios. The uplinks can be SFP+. They only need 16 ports.

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