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Brocade VDX 6730-60-F MTU on the port-channel members

  • 15 December 2017
  • 1 reply


I am having interesting problem with Brocade VDX 6730-60-F

I have a port channel configure with MTU 9214

I noticed that individual ports from that channel seems to have MTU 2500 and I am not able to change that, and as a result i am not able to send packets across without them fragmenting.

Am I missing something obvious?

PS: If i try to join port with mtu set to existing or new channel I get error that MTU first hast to be reset.

interface Port-channel 10 vlag ignore-split mtu 9216 description 10 switchport switchport mode trunk switchport trunk allowed vlan all no switchport trunk tag native-vlan switchport trunk native-vlan 2 no shutdown interface TenGigabitEthernet 12/0/56 description sw-a2-42 qumulo ports 8/1-4 no fabric isl enable no fabric trunk enable channel-group 10 mode active type standard lacp timeout long no shutdown Port-channel 10 is up, line protocol is up Hardware is AGGREGATE, address is 0005.33f2.9e04 Current address is 0005.33f2.9e04 Interface index (ifindex) is 671088650 Minimum number of links to bring Port-channel up is 1 MTU 9214 bytes show interface tengigabitethernet 12/0/51 TenGigabitEthernet 12/0/51 is up, line protocol is up (connected) Hardware is Ethernet, address is 0005.33f2.9df6 Current address is 0005.33f2.9df6 Pluggable media present Interface index (ifindex) is 51945604352 MTU 2500 bytes[/code]

1 reply

Userlevel 7
If this is still an issue for you I would suggest opening a ticket with the Extreme GTAC - https://extremeportal.force.com/ExtrArticleDetail?n=000018500