Set Jumbo Frames On A Nexus 3064
It is configured system wide to 9216 with the following commands:
1 2 3 4 5 6 7 | policy-map type network-qos jumbo class type network-qos class-default mtu 9216 exit exit system qos service-policy type network-qos jumbo |
Verification is a bit odd, though. If you enter a standard show interface, it won’t show the correct value:
1 2 3 4 5 6 7 8 9 10 | sw02# show int e1/1 Ethernet1/1 is down (SFP not inserted) Dedicated Interface Hardware: 100/1000/10000 Ethernet, address: 547f.ee52.9a08 (bia 547f.ee52.9a08 ) MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA Port mode is access Full-duplex, 10 Gb/s |
Notice how it has MTU displayed as “1500 bytes”.
If, however, I use the show queuing command it displays correctly:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | sw02# show queuing interface e1/1
Ethernet1/1 queuing information:
qos-group sched-type oper-bandwidth
0 WRR 100
qos-group 0
HW MTU: 9216 (9216 configured)
drop-type: drop, xon: 0, xoff: 0
Statistics:
Ucast pkts sent over the port : 0
Ucast bytes sent over the port : 0
Mcast pkts sent over the port : 0
Mcast bytes sent over the port : 0
Ucast pkts dropped : 0
Ucast bytes dropped : 0
Mcast pkts dropped : 0
Mcast bytes dropped : 0
Pkts dropped by RX thresholds : 0
Bytes dropped by RX thresholds : 0 |
Notice it shows “HW MTU: 9216”.