Question about Jumbo frames on individual ports - do you include the stacking ports as well?

  • 0
  • 1
  • Question
  • Updated 10 months ago
  • Answered
I would like to enable jumbo frames on two ports that will be connecting out to a brocade iscsi/nfs switches.  I have two X690's as my cores and want to take brocade-10g-sw1 into ports 1:5 on X690-1 and X690-2, and take brocade-10g-sw2 into ports 1:6 on X690-1 and X690-2.  Brocade switches will be configured as a LAG, and on the Exos switches they will obviously be configured as an mlag.

In both X690 core switch stacks, if I enable jumbo frames on ports 1:5-6, do I also have to do anything for the stacking ports?

I would consider enabling it globally, but the concern is what if something does not support jumbo frames.  What if a server sends a 9000 byte frame down to a device set to 1500?  Will it just be dropped?  Thats why I only want to enable it on ports that support it.
Photo of kjstech


  • 624 Points 500 badge 2x thumb

Posted 10 months ago

  • 0
  • 1
Photo of OscarK

OscarK, ESE

  • 7,912 Points 5k badge 2x thumb
Hello, there is no need to enable jumbo-frames on the stack ports, that is always enabled.
If a device that does not support jumbo frames receives a jumbo frame it will see it as error and will not respond to it.