nanog mailing list archives
Re: dark fiber and sfp distance limitations
From: "Michael K. Smith" <mksmith () adhost com>
Date: Sat, 02 Jan 2010 09:07:52 -0800
On 1/2/10 2:58 AM, "Mikael Abrahamsson" <swmike () swm pp se> wrote:
On Fri, 1 Jan 2010, Justin M. Streiner wrote:The first thing you need to do is test the fiber with an OTDR. If you don't have one, you can probably contract a local cabling company to test it for you.Why would you want an OTDR report on the fiber, when an attenuation report is probably more accurate? OTDR is good for locating WHERE a problem is, but if you're seeing .2 dB/km attenuation end-to-end, there is little reason to break out the OTDR.
If I was of the opinion that the telco in the original message would act upon output data to clean up fibers/jumpers/splices, then the OTDR is the way to go because you can show them exactly where the issues are in the entire length of fiber. If the telco isn't going to make any modifications then an optical power meter would probably be sufficient. Either you can hit the distance in your loss budget or not. Mike
Current thread:
- EDNS (Re: Are the Servers of Spamhaus.rg and blackholes.us down?) Paul Vixie (Jan 01)
- Re: EDNS (Re: Are the Servers of Spamhaus.rg and blackholes.us down?) bmanning (Jan 01)
- Re: EDNS (Re: Are the Servers of Spamhaus.rg and blackholes.us down?) Paul Vixie (Jan 01)
- Re: EDNS (Re: Are the Servers of Spamhaus.rg and blackholes.us down?) Eric Brunner-Williams (Jan 01)
- dark fiber and sfp distance limitations Mike (Jan 01)
- Re: dark fiber and sfp distance limitations Justin M. Streiner (Jan 01)
- Re: dark fiber and sfp distance limitations Mikael Abrahamsson (Jan 02)
- Re: dark fiber and sfp distance limitations Michael K. Smith (Jan 02)
- Re: dark fiber and sfp distance limitations Justin M. Streiner (Jan 02)
- Re: dark fiber and sfp distance limitations Nick Hilliard (Jan 02)
- Re: dark fiber and sfp distance limitations Mikael Abrahamsson (Jan 02)
- dark fiber and sfp distance limitations Mike (Jan 01)
- Re: EDNS (Re: Are the Servers of Spamhaus.rg and blackholes.us down?) bmanning (Jan 01)
- Re: dark fiber and sfp distance limitations Richard A Steenbergen (Jan 01)
- Re: dark fiber and sfp distance limitations Alexander Harrowell (Jan 01)
- Re: dark fiber and sfp distance limitations ML (Jan 01)
- Re: dark fiber and sfp distance limitations William Herrin (Jan 01)
- Re: dark fiber and sfp distance limitations Rene Avi (Jan 02)
- Re: dark fiber and sfp distance limitations Richard A Steenbergen (Jan 02)
- Re: dark fiber and sfp distance limitations Rene Avi (Jan 02)