[ofa-general] can not join due to rate:2.5Gbps < group:10Gbps?

[Todd Rimmer]

> From: Hal Rosenstock
> Sent: Friday, April 04, 2008 11:08 AM
> To: Brian J. Murrell
> Cc: general at lists.openfabrics.org
> Subject: Re: [ofa-general] can not join due to rate:2.5Gbps <
> group:10Gbps?
> 
> On Fri, 2008-04-04 at 11:05 -0400, Brian J. Murrell wrote:
> > On Fri, 2008-04-04 at 07:55 -0700, Hal Rosenstock wrote:
> > >
> > > Looks like you have a mixed rate set of ports so you need to
configure
> > > the group to 2.5 Gbps.
> >
> > I'm a bit green with I/B, so please bear with me if you can.  I do
> > understand that there can be mixed rates depending on hardware.  But
the
> > "hardware guys" assure me the cards in these machines should be able
to
> > do 10Gbps.  Maybe they are wrong.  The card is listing as:
> >
> > 06:00.0 InfiniBand: Mellanox Technologies MT23108 InfiniHost (rev
a1)
I would not recommend reconfiguring your SM for this situation.
Instead, you most likely have a bad cable or possibly a bad HCA or
switch port.  All IB products shipped within the last 6 years support
10g, so the fact your system has negotiated to 2.5g indicates a problem
with the link.

Bad or poorly connected cables are the typical cause.

Todd Rimmer
Chief Architect 
QLogic System Interconnect Group
Voice: 610-233-4852     Fax: 610-233-4777
Todd.Rimmer at QLogic.com  www.QLogic.com