One of my clients had new single mode fibers installed, but not only between distant buildings on his campus: all available fibers in-/outside their buildings.
They want to use a pair of Nexus 3548 and about 12-18 C2960S with 10G uplinks (about 100 - 300 m length per access switch).
Ciscos data sheet für 10G transceivers states, that SFP-10G-SR transceiver are for multi mode fibers only, but not for single mode fibers.
Is there any "cheap" (but supported) solution to avoid the use of SFP-10-LR transceivers for every uplink connection (more than 20)?
For further cost saving you can evaluate products from third-party.
There's a problem with the SFP-10G-LRM transceivers: They aren't listed neither in the Nexus 3000 series compability list nor in the transceiver list (for Nexus 3548).
Informations about the SFP-10G-LRM modules a rare and only a few dealers have them in stock/can order them.
3rd party components are not an option: It doesn't have to be that "cheap".
Thx for your answers!
Further to what Paolo has posted, if you are going to get the SFP+ from third parties, make sure the modules have been re-flashed with Cisco's IDPROM values.
There's another method, a command, but I'm not going to mention it here. You'll need to Google it.