Ethernet Jumbo Frames

Rick Moleres Rick.Moleres at
Thu Apr 3 08:15:51 EST 2008

Sure, it can be done.  The Xilinx 10/100 Ethernet drivers have jumbo
frame support in MontaVista/WindRiver Linux.  As long as both ends are
talking jumbo frames, works just fine.


-----Original Message-----
From: at
[ at] On
Behalf Of Darcy Watkins
Sent: Monday, March 31, 2008 2:48 PM
To: LinuxPPC-Embedded
Subject: Ethernet Jumbo Frames

Has anyone on this list ever been given a requirement to implement
support for ethernet frames larger than the standard MTU of 1500?  ...

... for normal 10/100 Ethernet?   ... not gigabit.

The application is to support certain encapsulation protocols without
imposing smaller than 1500 byte MTU restrictions on the innermost

I have been tasked to investigate this for a system based on PPC405EP.
Can it be done using the IBM EMAC, Linux drivers, etc?



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