I don't get this really. Nobody at Cisco can give me a definite answer without pointing me to the proper documentation.
Your colleague gives me the following details:
F1 supports 20 km with ER With 6.1 and sup2,
F2 module will support 80km with xWDM optics
Please explain why 40km is listed at the IEEE Data Center Bridging (DCB) Features on http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/data_sheet_c78-605622.html
I guess this details need to be clear and accesible for everyone. How is a customer supposed to adopt FCoE, while technical requirements and limitations aren't properly listed at all?
Also, can anyone please explain how FCoE is supposed to work in a xWDM configuration?
Both the F1 and F2 linecards do support xWDM SFPs according to the data sheets. Both data sheets refer to
http://cisco.com/en/US/prod/collateral/modules/ps5455/ps6575/product_data_sheet09186a00801a557c.html for CWDM modules and for DWDM module to http://cisco.com/en/US/prod/collateral/modules/ps5455/ps6576/product_data_sheet0900aecd80582763.html for DWDM.
These links however only describe 1000BASE SFPs! What about 10GBASE SFPs?