Equipment Supporting 2.5gbps and 5gbps

Thu Jan 28 16:08:06 UTC 2016

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 at 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 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
>> >
>>