08-03-2012 04:22 AM
Hi experts,
Does anybody know what the max distance is for FCoE between datacenters?
Is there a difference between F1 and F2 linecards, considering this distance?
Thanks!
08-04-2012 07:10 AM
Hello
Currently max distance supported for lossless fabric is upto 20km with both F1/F2 cards.
Thanks
-Prashanth
08-04-2012 03:03 PM
Thanks for your reply Prashanth,
Can you please point me to some documentation about the distance limits?
Thanks,
Thomas
08-04-2012 04:29 PM
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/data_sheet_c78-605622.html
Maximum lossless link distance: 20km
08-05-2012 05:52 AM
Hi Prashanth,
Correct me if i'm wrong, but the document states:
Maximum lossless link distance: 40km
Thanks,
Thomas
08-05-2012 06:14 AM
I see Maximum lossless link distance 20KM
08-05-2012 01:39 PM
You are right, the document says 20KM. The description on the site itself says 40KM.
Now i'm wondering which one is right.
08-05-2012 07:08 PM
Curently 20KM is what has been tested and certified.
08-08-2012 04:01 AM
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?
08-08-2012 05:02 AM
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?
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide