See this: http://www.computer-crafts.com/PDF%20Files/whit_%20pape_%20DMD_distances.pdf
SX on multi-mode has a max distance of 220m (or 275 if you are using 125). LX on multi-mode has a max distance of 550m. This is using the 62.5/125 multi-mode fiber, which is the only multi-mode fiber I've ever seen installed in the US in over 10 years of working in the healthcare networking field. That's the whole purpose of the conditioning cables, so that you can get a longer distance by using LX interfaces. If you are going to install 50/125 fiber (which I think cost a bit more), then it >>makes absolutely no senseProbably because LX GBICs transfer longer than SX GBICs, even over >multi-mode fiber. Is this a fact? The Cisco datasheet shows 550m max over MMF, both for LX and SX GBICs. > I don't know why 50 micron multi-mode is being used. I'd >use the industry standard 62.5/125 multi-mode fiber instead. I guess it's too late for that. And actually, 50/125 is pretty common, too (at least in literature... :). More to the original question, here is the result of a minimal-effort search on Google (for "50 conditioning cable"): http://www.stonewallcable.com/dept.asp?dept_id=50 Thanks, Zsombor >Fred Reimer - CCNA > > >Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 >Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 > > >NOTICE; This email contains confidential or proprietary information which >may be legally privileged. It is intended only for the named recipient(s). >If an addressing or transmission error has misdirected the email, please >notify the author by replying to this message. If you are not the named >recipient, you are not authorized to use, disclose, distribute, copy, print >or rely on this email, and should immediately delete it from your computer. > > >-----Original Message----- >From: Zsombor Papp [mailto:[EMAIL PROTECTED] >Sent: Monday, July 14, 2003 5:52 PM >To: [EMAIL PROTECTED] >Subject: Re: Fiber ? [7:72260] > >Why don't you just get multimode GBICs? > >Thanks, > >Zsombor > >At 07:43 PM 7/14/2003 +0000, Schlotterer, Matthew wrote: > >Hello, > > > >I'm currently looking to run multimode 50 micron 1300 nm fiber from >building > >to building. Then once at each building the fiber will be terminated. >From > >the termination point the fiber is going into a Cisco 2950-G 48 w/ > >1000BASE-LX GBIC on both sides. From what I've read I need a fiber optic > >mode conditioning patch cables to go from the termination point to the >Cisco > >switches. This is because it is running multimode between the buildings >and > >the Cisco switch runs at single mode. Problem lies in that the optic mode > >conditioning patch cables come only in 62.5 micron cables. Has anyone had > >experience with this? Is the 62.5 micron going to cause a problem with the > >50 micron between buildings? Any input/feedback would be appreciated. > > > >Mode Conditioning Example: > >http://www.l-com.com/content/ResourceCenter/Tips/pages/fiber_06.htm > > > >Thanks!!! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72318&t=72260 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
