Equipment Supporting 2.5gbps and 5gbps

Thu Jan 28 15:52:59 UTC 2016

The standard 24 or 48 port SFP+ switch is 10 times the price of the
equivalent switch with 24 or 48 port SFP. The same is true for the optics.

2.5 and 4 Gbit/s SFP modules are available and cheap. It is just that
ethernet ports will not take advantage of the extra speed. So it is only
useful on fibrechannel ports.

It would be an improvement if we can get 2.5 or 4 Gbit/s ethernet on SFP
instead of paying for an all SFP+ switch.

Regards,

Baldur

On 28 January 2016 at 15:23, Greg Hankins <ghankins at mindspring.com> wrote:

> 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
> >
>