06-12-2014 10:41 PM - edited 03-01-2019 11:42 AM
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.
Solved! Go to Solution.
06-13-2014 12:03 AM
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 !
06-13-2014 12:03 AM
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 !
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