DWDM and CWDM

[forsudhaji]

What is DWDM and CWDM? What is the difference between them? How they are used in WAN Topology and mainly in Metro Ethernet network? What are the components involved??What is the Interface needed in Cisco Routers and Switches to support DWDM and CWDM?

Can anyone of u explain me in detail..

Thanx in adv.

[thisisshanky]

These links might help!!

http://www.nwfusion.com/news/tech/2002/0819tech.html

http://electronics.howstuffworks.com/framed.htm?parent=question402.htm&url=http://webopedia.internet.com/TERM/D/DWDM.html

http://www.cisco.com/en/US/netsol/ns340/ns394/ns113/ns197/netqa09186a00800a47e1.html

http://www.cisco.com/en/US/products/hw/modules/ps5420/products_data_sheet09186a00801a557e.html

http://www.cisco.com/en/US/products/hw/optical/ps2006/prod_bulletin09186a00801a759e.html

http://www.cisco.com/en/US/products/hw/modules/ps4999/prod_module_series_home.html

[forsudhaji]

Excellent links. All of them were much informative.

Thanx a lot..