BCM5721 and jumbo frames (PowerEdge R200)

[Thomas_Chenault at Dell.com]

BCM5721 network adapters do not support jumbo frames. There was an error
in the document referenced below. A newer version of the document
corrects the mistake.

http://support.dell.com/support/edocs/network/BroadCom/R125875/en/featur
es.htm


Thomas

-----Original Message-----
From: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] On Behalf Of Wolfram Schlich
Sent: Tuesday, February 05, 2008 7:03 AM
To: linux-poweredge-Lists
Subject: BCM5721 and jumbo frames (PowerEdge R200)

Hi,

according to the Dell site
http://support.dell.com/support/edocs/network/P29352/English/features.ht
m#features
the BCM5721 network adapters do support jumbo frames.

Interestingly, Fujitsu-Siemens says, the don't:
http://manuals.fujitsu-siemens.com/serverbooks/content/manuals/html/broa
dcom/netxtreme_57xx/bacs.htm

I fail to set the interfaces MTU to any value larger than 1500
(kernel 2.6.23) -- the error is "SIOCSIFMTU: Invalid argument".

So please Dell folks, can you *definitely* tell whether the BCM5721
adapters do support jumbo frames or not?

TIA.
-- 
Regards,
Wolfram Schlich <wschlich at gentoo.org>
Gentoo Linux * http://dev.gentoo.org/~wschlich/

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