On 16/05/2012 10:18, Peter Rathlev wrote: > Now we're thinking about making it a 10G link instead. Finding 10G > transceivers capable of supporting at least ~24-25dB seems tricky > though.
have been there and done this. I would recommend getting external transponders for this, and if you are, to look into getting coloured transceivers instead of grey 120km units (not even sure if they make grey 120km transceivers), because - getting long range wdm X2 transceivers is likely to be very expensive because only vendor C uses X2, and everyone else in the world uses XFP or SFP+. - if you ever move to another platform, you can be pretty much guaranteed it won't support x2, which means that your expenditure on x2 transceivers will become worthless > 2) We might cut ~1dB by splicing in a few places instead of patching, > but we probably can't get below 23dB loss. Would using 25dB capable > transceivers on a 23dB stretch be too bold for comfort? yes. This sounds like the sort of link where you'll have to add in a couple of dB overhead to compensate for chromatic dispersion @10G. Nick _______________________________________________ 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/