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Enabling Jumbo Frames on our Core network

Enabling Jumbo Frames on our Core network

Jeremy_Bullock
New Contributor II
If I enable Jumbo frames on a top of the rack (server farm) and 'above' it on a 'core' switch, will it effect devices that might not support jumbo frames?
3 REPLIES 3

andreas1
New Contributor II
It will not affect devices that hasn't configured jumbo-rames themself. It only allows clients/devices that has it configured to send jumboframes. So it's totally safe to enable on all ports.

Kawawa
Extreme Employee
In addition to what Patrick said, if an upstream/downstream device receives a Jumbo frame, if fragmentation is not allowed for that stream, that frame is dropped. When this happens, you should see the RX Over and Jumbo packet counters increment when you run the "show ports rxerrors" and "show ports packet" commands.

Patrick_Voss
Extreme Employee
Enabling jumbo frames will just allow the switch to process a larger MTU size. It will allow all traffic below that maximum threshold.
GTM-P2G8KFN