[rhn-users] Fwd: Re: Net interface flap, 2650, RH ES 3.0 2.4.21-15.ELsmp - update

[Jed Donnelley]

I thought others on this Redhat list might be interested in some of the 
responses
on the Dell list:

>Date: Fri, 28 May 2004 05:48:12 -0400 (EDT)
>From: Dave Tetreault <davet at uriacc.uri.edu>
>Subject: Re: Net interface flap, 2650, RH ES 3.0 2.4.21-15.ELsmp
>To: Jed Donnelley <jed at nersc.gov>
>Cc: linux-poweredge at dell.com
>
>On Tue, 25 May 2004, Jed Donnelley wrote:
>
> > I've been running RH ES 3.0 on a Dell 2650 server with for some time 
> with a
> > GigE interface
> > with the Broadcom NetXtreme BCM5701 technology the tg3 driver, most
> > recently with the
> > RH 2.4.21-9.0.1.ELsmp kernel.
> >
> > Last week I tried upgrading to the RH 2.4.21-15.ELsmp kernel.  When I ran
> > with that newer kernel the network interface on the box went into a 
> loop of
> > going up and down every few seconds.
>
>Just experienced this when I upgraded to 2.4.21-15.EL.  According to the
>release notes the tg3 driver was updated to improve auto negotiation.  It
>appears to be in this area.  When connected to the normal Cisco switch
>(4500) it flaps.  If I put an unmanaged Dell switch in the middle
>everything works fine.  I'm going to work with the network folk to get
>better info.
>
>--
>David E. Tetreault                        davet at uriacc.uri.edu
>Manager of Technical Support              401-874-4472
>OIS/TOPS, Tyler Hall
>University of Rhode Island
>Kingston RI 02881

and later from:

>Date: Fri, 28 May 2004 18:06:18 -0600
>From: Eric Swenson <eric at reaction-eng.com>
>Subject: Re: Net interface flap, 2650, RH ES 3.0 2.4.21-15.ELsmp
>To: Dave Tetreault <davet at uriacc.uri.edu>
>Cc: Jed Donnelley <jed at nersc.gov>, linux-poweredge at dell.com
>Organization: Reaction Engineering INTL
>
>Strange, I wonder if  this is the cause of my problem as well.  I'm
>running RH ES 3.0 on a Dell 4600 with the BCM5701 using the tg3 driver,
>and after updating to 2.4.21-15.ELsmp a few days ago, I experience this
>strange lagging out over remote connections every few seconds or so-
>sometimes for as long as 7 or 8 seconds.  I fired up an Intel Pro/1000
>MT dual server adapter with Intel's latest e1000, and saw the same
>problem there as well.  No lag at all when logged into the console.
>I'll try disabling autoneg on my powerconnect switches and see if that
>helps as well.
>
>Has anyone else seen strange problems like this with 2.4.21-15.ELsmp?
>
>Thanks,
>Eric

FYI.

--Jed http://www.nersc.gov/~jed/