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Fibre Channel Jumbo Frames - UCS

I was wondering if it's actually possible to have Jumbo Fibre Channel Frames running on a UCS?

I've read these two articles which provide some excellent information on implementing Jumbo Frames and Fibre Channel Jumbo Frames:

http://datacenteroverlords.com/2013/04/01/jumbo-fc-frames/
http://www.ccierants.com/2013/10/ccie-dc-definitive-jumbo-frames.html

Everything within the SAN I'm administrating has the ability to set the MTU up to 9036 except for the UCS. For example on the NetApp gear I can set the MTU per interface, on the Cisco MDS I can set the MTU per vsan. However in the UCS manager when I go to QoS System Class, the option to set the MTU for Fibre Channel is greyed out and it doesnt look like there's anyway to override the preset frame size. I can set the MTU of Best Effort however my understanding is Fibre Channel traffic within the UCS will use the Fibre Channel system class.


Furthermore I noticed I can set the Maximum Data Field Size on the vHBA's within the UCS manager however my understanding is the maximum this can go up to is 2048.

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Advocate

HiDid you checkhttp:/

Hi

Did you check

http://datacenteroverlords.com/2013/04/01/jumbo-fc-frames/

April fools! I wish I saw this earlier, I would have posted corroborating test results!

In Summary: forget Jumbo Frames for FC !

View solution in original post

1 REPLY 1
Advocate

HiDid you checkhttp:/

Hi

Did you check

http://datacenteroverlords.com/2013/04/01/jumbo-fc-frames/

April fools! I wish I saw this earlier, I would have posted corroborating test results!

In Summary: forget Jumbo Frames for FC !

View solution in original post

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