Single Fiber Lines in CESNET Backbone

摘要

CESNET is an association of universities and Academy of science of Czech republic. It is operating a national research and education network (NREN) interconnecting all university cities in the republic. Since ATM and SDH technologies were replaced by ethernet technology in WAN data networks CESNET maintains its backbone network mostly on dark fiber leased from various vendors. On some lines it very reasonable to use only one single fiber line. In this paper we discusse technology used on such lines in the CESNET backbone.