Jumbo frames on PE 1950

Andrew Geiger andrew_geiger at tstna.com
Fri Sep 19 18:36:19 CDT 2008


ESXi does not support Jumbo frames.  You need console access on an ESX
server to enable a MTU of 9000.

-----Original Message-----
From: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] On Behalf Of Adam Goodman
Sent: Friday, September 19, 2008 7:28 PM
To: Brian D. McGrew
Cc: <linux-poweredge at dell.com>
Subject: Re: Jumbo frames on PE 1950

I think Ethernet is up to 1500 mtu.

Sent from my iPhone

On Sep 19, 2008, at 7:19 PM, "Brian D. McGrew" <brian at visionpro.com>  
wrote:

> I'm having the same kind of a problem on a 1900 with VMware ESXi, but,
> since it's ESXi, I don't have much debug to go on.  I set the MTU to
> 9000 at the switch and the computer and lost all network connectivity!
>
> Could be related?
>
> -brian
>
> -----Original Message-----
> From: linux-poweredge-bounces at dell.com
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Matt Lawrence
> Sent: Friday, September 19, 2008 3:37 PM
> To: linux-poweredge at dell.com
> Subject: Jumbo frames on PE 1950
>
> I'm running CentOS 5.2 with a much more recent kernel on a bunch of PE
> 1950 systems.  I have set the maximum MTU on the switch to 9000 and  
> I'm
> trying to make jumbo frames work.  No luck so far, with any MTU  
> greater
> than 1500,  netperf just gets the error: netperf: receive_response: no
> response received. errno 110 counter 0
>
> Any idea what I have missed?
>
> -- Matt
>
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