Jumbo frames on PE 1950

Peter J Milanese PMilanese at nypl.org
Fri Sep 19 18:30:40 CDT 2008


Ethernet does 9000.

Your network must be configured to do so. It is not just enabling it on the box.




----- Original Message -----
From: Adam Goodman [adam at wispring.com]
Sent: 09/19/2008 07:27 PM AST
To: "Brian D. McGrew" <brian at visionpro.com>
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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