concerned about fiber length

Answered Question
Jun 24th, 2008

I have a 6509 connected to a 6506 with SFP gbics, glc-sx-mm. The distance between the 2 is about 1350 feet. Is this within specification? Will I have any problems due to the length?


I have this problem too.
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vmiller Tue, 06/24/2008 - 08:51

According to spec, I think not. SX multi mode should run to a max of 550 meters, This converts to 1804 feet. Its close.

Do test your light levels first and make sure you have adequate recieve power.

DARYLE DIANIS Tue, 06/24/2008 - 10:20

hi thanks for the info, is there a document that you can refer me to with the spec? Is it an industry thing or a cisco thing? this line also has 3 connections along the way, so I'm also reading about insertion loss. If you count the fiber patch cords, there are 5 of these connections. I had the fiber tested last weekend and I'm waiting on the results.


DARYLE DIANIS Wed, 06/25/2008 - 06:45

thanks, this is good, too, there seems to be a difference in the lenght limit based on whether or not the fiber is 50 or 62.5 micron. I'm pretty sure I have the 62.5, so I could be way over the limit.


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