All you need to do is put this configuration on all your nexus 5ks:
This will globally enable jumbo frames.
To verify whether it works, do a "show int eth x/y", you should see the jumbo counters increasing.
Also note that the mtu won't change on the interface itself, its a global command, not a 'per interface' command. But thats ok, even if mtu says 1500 it can still accept jumbo frames if you have the global config applied.
Ethernet1/1 is up
0 unicast packets 1221713 multicast packets 2644 broadcast packets
1224357 input packets 91236171 bytes
---> 458 jumbo packets 0 storm suppression packets
0 giants 0 input error 0 short frame 0 overrun 0 underrun
0 watchdog 0 if down drop
0 input with dribble 0 input discard
0 Rx pause
Please refer to this link:
Hope that will help you.
Can I ask one question that sort of applies to this? Is it possible to setup jumbo frames on a Nexus 5010 by creating a new VLAN while still leaving the other VLANs on the switch without jumbo frames enabled? We'd like to use 10 GB connections with jumbo frames to our filer while using the 1 GB ports to connect to other devices. Any assistance would be appreciated.
You can change MTU for traffic using different COS values, for example
if you can mark on the server side a cos value on this vlan, then you
can apply the MTU change for it, but there is vlan matching criteria on
the switch to adjust the MTU.