11 messages in net.nether.puck.cisco-nsp[c-nsp] Catalyst SX GBIC's and SMF
FromSent OnAttachments
Robert WaltonJan 7, 2005 3:11 am 
Mikael AbrahamssonJan 7, 2005 3:36 am 
Justin M. StreinerJan 7, 2005 12:28 pm 
Lindahl, CarlJan 7, 2005 12:36 pm 
Tim WindersJan 7, 2005 1:54 pm 
Tristan GulyasJan 10, 2005 5:15 am 
Church, ChuckJan 10, 2005 8:39 am 
Niels BakkerJan 10, 2005 8:58 am 
Bill WichersJan 10, 2005 1:16 pm 
Mikael AbrahamssonJan 10, 2005 3:51 pm 
Bill WichersJan 10, 2005 4:59 pm 
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Subject:[c-nsp] Catalyst SX GBIC's and SMFActions...
From:Tristan Gulyas (zar@hotblack.net)
Date:Jan 10, 2005 5:15:23 am
List:net.nether.puck.cisco-nsp

All,

I have seen an installation where mode conditioning cables are used to go between LX SFP modules with MM fibre. I have no idea about the reverse (SX GBICs with SM fibre) although I don't see why this wouldn't be possible.

I have been told that running 1000baseLX with MM fibre + mode conditioning patch cables gives you "slightly better" range than using native SX, but there's no solid evidence for this, so I'd stick to the 550 metre spec as per 1000baseSX to be safe.

With respect to the original problem, it depends on how the fibre runs between the cat4000s (whether it's just "across the floor" or whether there's cable running through a building) It may be substantially cheaper to aquire a MM fibre patch cable vs. purchasing LX GBIC/SFP modules.

.t