Equipment Supporting 2.5gbps and 5gbps

Greg Hankins ghankins at mindspring.com
Thu Jan 28 14:23:21 UTC 2016


The goals of these BASE-T projects are specifically to extend the life
of the large installed base of Cat 5e/6 cabling with higher speeds.
I wouldn't expect there to be a fiber interface, because we already have
much higher speeds that are supported on MMF/SMF at better costs (ie if
you had a fiber cable, would you really want to run 2.5 GE when 10 GE
is so affordable now).  Anything is possible though, if there is enough
demand and a market then someone will make it.

Greg

-- 
Greg Hankins <ghankins at mindspring.com>

-----Original Message-----
Date: Thu, 28 Jan 2016 01:51:06 +0100
From: Baldur Norddahl <baldur.norddahl at gmail.com>
To: nanog at nanog.org
Subject: Re: Equipment Supporting 2.5gbps and 5gbps

Will we also get 2.5 Gbps fiber optics? SFP modules should support it?

Regards

Baldur
Den 27. jan. 2016 23.00 skrev "Greg Hankins" <ghankins at mindspring.com>:

> Fortunately the two groups came together in the IEEE, and there are no
> competing standards.
>
> IEEE P802.3bz 2.5/5GBASE-T Task Force stared in March 2015:
> - 2.5GBASE-T: 4 x 625 Mb/s over 100 m Cat 5e (Class D) or Cat 6 (Class E)
> unshielded twisted-pair copper cabling
> - 5GBASE-T: 4 x 1.250 Gb/s over 100 m Cat 5e (Class D) or Cat 6 (Class E)
> unshielded twisted-pair copper cabling
> - MultiGBASE-T auto-negotiation between 2.5GBASE-T, 5GBASE-T, 10GBASE-T,
> 25GBASE-T, 40GBASE-T
> - Automatic MDI/MDI-X configuration
> - PoE support including IEEE 802.3bt amendment (power over 4 pairs)
> - Optional Energy Efficient Ethernet (EEE) support
> - Standard expected in September 2016
> - Interfaces expected on the market in 2016
> - Task Force web page http://www.ieee802.org/3/bz/
>
> You might have seen my Ethernet speeds presentation... the most recent
> one is here:
> http://ix.br/pttforum/9/slides/ixbr9-ethernet.pdf (December 2015)
>
> It's slightly out of date as the IEEE Interim was just last week.
>
> Greg
>
> --
> Greg Hankins <ghankins at mindspring.com>
>
> -----Original Message-----
> Date: Wed, 27 Jan 2016 21:45:27 +0000
> From: A.L.M.Buxey at lboro.ac.uk
> To: Justin Krejci <JKrejci at usinternet.com>
> Cc: "nanog at nanog.org" <nanog at nanog.org>
> Subject: Re: Equipment Supporting 2.5gbps and 5gbps
>
> Hi,
> > I've a couple 10 port Cisco switches that support 2.5 and 5gbps over
> cat5e, just wondering if there are any other vendors out there with
> offerings that support these newer ethernet speeds. Supporting cat5e for
> these multi-gig speeds is a real boon in many circumstances given the wide
> popularity of it in many buildings.
> >
> > Does anyone have any experience with or knowledge of other products,
> switches in particular, supporting 2.5 and 5 gbps?
>
> well, until the standard is ratified, these Multi-Gig offerings are quite
> proprietary..
>
> there are 2 competing camps....hopefully they will be compatible and not
> end up like beta/vhs once the dust settles
>
>
> camp 1 - http://www.nbaset.org/
>
>
> camp 2 - http://www.mgbasetalliance.org/
>
>
> look at those vendors..... I think they hope by avoiding IEEE int he early
> stages and taping silicon they'll
> get the job done quicker - the drive mainly being faster wireless APs and
> cheaper data centre interconnects...
>
> alan
>



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