Mack, On Mon, 2011-10-10 at 14:59 -0700, Mack McBride wrote: > The LRM looks like the way to go for you if you are limited by SFP+ as > the Andrew pointed out.
Only I'm not the OP :). Andrew is correct though, LX4 doesn't seem available in SFP+. > The Cisco spec is for 220M at 500MHz fiber on LRM. > Basically with dispersion you will get shorter error free distance so > although the LX4 is only listed for 500MHz it will work at lower modal BW. > It just shortens the range. Same is true for the LRM. > It will work at lower modal BW but you get shorter ranges. > You are probably close to the limit with 160M and 200MHz modal BW. > And I would say you are over the 'rated' limit. > For reference the 50 micro with 400MHz modal BW the rated limit is 100M. Well, actually I'm using SFP+ LRM transceivers from HP (J9152A) which *are* spec'd for up to 220 meters on 160MHz modal BW MMF. But we're drifting off-topic here :). Thanks for all your thoughts though. Regards, Jeroen van Ingen ICT Service Centre University of Twente, P.O.Box 217, 7500 AE Enschede, The Netherlands _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/