Re: Equipment Supporting 2.5gbps and 5gbps

[Josh Reynolds <josh () kyneticwifi com>]

You're buying your switches and optics in the wrong places.

An SFP+ 10K w/ DOM is running me a little under $34. An SFP+ port runs
me slightly over $102. (Juniper)

On Thu, Jan 28, 2016 at 9:52 AM, Baldur Norddahl
<baldur.norddahl () gmail com> wrote:
> 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 () 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 () mindspring com>
> >
> > -----Original Message-----
> > Date: Thu, 28 Jan 2016 01:51:06 +0100
> > From: Baldur Norddahl <baldur.norddahl () gmail com>
> > To: nanog () 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 () 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 () mindspring com>
> > >
> > > -----Original Message-----
> > > Date: Wed, 27 Jan 2016 21:45:27 +0000
> > > From: A.L.M.Buxey () lboro ac uk
> > > To: Justin Krejci <JKrejci () usinternet com>
> > > Cc: "nanog () nanog org" <nanog () 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