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203 Posts
0
21576
May 29th, 2010 12:00
Changing an LAG to work with jumbo frames...
It seems to be pretty well documented on how to enable jumbo frames on individual or all ports, and it also seems to be mentioned quite a bit to make sure that you change your LAG to jumbo frames, but I cannot find the command line syntax on how to do that, and how to verify that it is set correctly afterward. Any ideas? I'm trying to do this on two powerconnect 5424's that have the first 4 ports on each switch, in a LAG, with STP turned on and all of the other typical settings.
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bh1633
909 Posts
1
June 1st, 2010 09:00
The 54xx does not have the requirement to "enable jumbos for your LAG group as well as your ports" since the setting for jumbo frames on the 54xx is global, not per interface.
bh1633
909 Posts
0
June 1st, 2010 08:00
Setting the MTUon the 5400 is not a port configuration, it is a swich configuration. So once set, all ports and LAGS will have MTU set to jumbo. Jumbo frame size is 9216. "show running-config" will show the jumbo frame setting on this switch.
console> enable
console# configure
console# port jumbo-frame
NOTE: PowerConnect 62xx, 80xx, M6xxx, M80xx switches set the MTU per port.
sketchy00
203 Posts
0
June 1st, 2010 09:00
Thanks for the response. So from what I'm hearing you say, is that there is NOT any additional modificated needed to enable a LAG trunk group beyond the global setting of "port jumbo-frame" (which I had already done). Correct? This seems to contradict other threads that I've seen that have stated (paraphrasing) to "be sure and enable jumbos for your LAG group as well as your ports....")
sketchy00
203 Posts
0
June 1st, 2010 10:00
Much appreciated. Thanks!