vendors that specify a minimum distance for lx typically spec 2 meters. even EX shouldn't spike the receiver at that distance as long as the max RX is about +1. On 1/25/12 11:26 , jon Heise wrote: > we are moving a router between 2 data centers and we only have LX sfp's for connection, is there any issue using LX sfp's in a short range deployment ? >