The Cisco® 10GBASE Dense Wavelength-Division Multiplexing (DWDM) SFP Modules (Figure 1) allow enterprises and service providers to provide scalable and easy-to-deploy 10-Gigabit LAN, WAN, and optical transport network (OTN) services in their networks The Cisco DWDM SFP supports 10-Gigabit data rates from 9.9G to 11.1G (LAN, WAN, and OTU2/OTU2e). - The hot-swappable input/output device plugs into an Ethernet SFP port of a Cisco switch or router to link - the port with the network. - The Cisco DWDM SFP supports the Cisco quality identification (ID) feature, which enables a Cisco switch - or router to identify whether or not the module is an SFP module certified and tested by Cisco. - The standard Cisco DWDM SFP supports 40 non-tunable ITU 100-GHz wavelengths. - Cisco DWDM SFP modules support digital optical monitoring capability.