> If I use SFP LX connector and coonect two routers ports back to back. > Will this have any impact on router port .
No impact, it should work. You can connect LX transceivers back to back; iirc, minimum patch length is somewhere around 0.5 to 2 meters. > Is that I can use only SX SFP for Back to back connectivity with routers. No, LX or BX are OK too. Only with ZX or other long-haul optics you might need an attenuator. > Also if my router port is coonecting to MUX which is colocated , I > need to mandatorly use SX SFP. That depends on what the MUX supports, I guess... SX is generally used on short distances since the optics are cheaper. Regards, Jeroen van Ingen ICT Service Centre University of Twente, P.O.Box 217, 7500 AE Enschede, The _______________________________________________ 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/