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.nordd...@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 <ghank...@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 <ghank...@mindspring.com> >> >> -----Original Message----- >> Date: Thu, 28 Jan 2016 01:51:06 +0100 >> From: Baldur Norddahl <baldur.nordd...@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" <ghank...@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 <ghank...@mindspring.com> >> > >> > -----Original Message----- >> > Date: Wed, 27 Jan 2016 21:45:27 +0000 >> > From: a.l.m.bu...@lboro.ac.uk >> > To: Justin Krejci <jkre...@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 >> > >>
