[AusNOG] 10GBase-T SFP modules?

Thu Jul 10 11:18:29 EST 2014

FYI – At least with Cisco they have had SFP+ ports for a while now in the network modules on the 3750-x and 3850 switches, as well as the equivalent 3560-X and 3650 switches.

Not sure re: the 29xx series but I’d imagine they do have some now in the newer models.

Furthermore they sell a wholly SFP+ 3750-x with only 12 SFP+ ports (and I think a 24 port as well, can’t recall)

Though I do agree with Skeeve’s viewpoint that you don’t see many 10Gbase-T devices around, there are getting to be lots more SFP+ models out there.

I think very soon we will see an explosion of 10G base-T as well, given 802.11AC is ramping up, Wave 2 will definitely require it.

As for the OP – I would love to see some SFP+ 10Gbase-T modules and I think we will see that soon assuming power isn’t a problem, again due to radios for 11ac wave 2.

Thanks,
Ayden Beeson

From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Skeeve Stevens
Sent: Thursday, 10 July 2014 10:29 AM
To: Lincoln Dale
Cc: <ausnog at lists.ausnog.net>
Subject: Re: [AusNOG] 10GBase-T SFP modules?

Lincoln,

I know you live in vendor world, but most of us live in the real world.  I work in a lot of networks, SP's, Enterprise... old and new.. and I almost NEVER come across equipment with 10GBase-T ports in them.  I don't even recall the last 10GBase-T port I saw - and this is on a LOT of kit.

This very much sounds like the property people saying 'The market is going to increase and values increasing!' just to justify and push up their own sales.

I know Arista has 10GBase-T, in fast the first 48 port 10GBase-T switch I ever saw was an Arista.  Don't misunderstand me... I think 10GBase-T is awesome and I recommend people consider it as a TOR over SFP+ anytime they have a number of ports to justify it... but few do due to the lack of portability of 10GBase-T - meaning you need those ports wherever kit is moved to, very few people are seriously considering it as a choice to deploy.

With cost, I am not talking about the SME crap... it is a hell of a lot cheaper to deploy 10GBase-T switches - the switches are a bit more expensive, but once you factor in SFP+ modules into a switch, the opticals are much more expensive.

I also meant to the vendor who replied about the 10GBase-T <-->SFP+ module possibility... and that making that, which would be consumed in VERY low numbers (my opinion) that the business case would be hard - for anything - made where the numbers shipping would be low.

Re switch availability... I live in a world of enterprise grade, and also mainstream vendors.  Juniper has 1 switch (that I know), Cisco has a few line-cards and mostly higher-end Nexus models (2k - which are Fabric extenders, 5596T) and 6500 line-cards... the 4900 has some modules, but there is nothing (I think) in the Catalyst 3000 and below series.. in fact, even full 10G SFP+ is still rare at this level of switching.

Cisco and Juniper both still have no all 10Gb (SFP+) switches in the low end (EX2200, EX3200, C29xx, C3xxx) ranges, much less 10GBase-T.

...Skeeve

Skeeve Stevens - eintellego Networks Pty Ltd
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On Thu, Jul 10, 2014 at 9:59 AM, Lincoln Dale <ltd at arista.com<mailto:ltd at arista.com>> wrote:
Sorry Skeeve but you've got 3 incorrect statements in a row here.

On Thu, Jul 10, 2014 at 9:34 AM, Skeeve Stevens <skeeve+ausnog at eintellegonetworks.com<mailto:skeeve+ausnog at eintellegonetworks.com>> wrote:
The deployment of 10GBase-T ports are so low

This is not correct according to independent analyst market research.
I cannot point you at most recent versions of it but you can see historic versions of it from e.g. Crehan research at <http://www.broadcom.com/docs/features/CREHAN_ServerIO_whitepaper.pdf>.

In CY2014 there will almost be as many 10GBASE-T ports shipped as those SFP+.

and the switches also rare,

Switches with RJ45 100/1000/10G-T are not rare at all.

that while it would be nice, I don't see an actual business case, unless they were VERY expensive, and then no one would buy them.

For many server vendors, 10GBASE-T is often the lowest capex cost way of connecting at 10G.
It also provides a nice upgrade path if e.g. not all infrastructure is 10G, some servers 1G still.

cheers,

lincoln.

Lincoln Dale | Principal Engineer, Arista Networks Inc. | ltd at arista.com<mailto:ltd at arista.com>
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