netdev - Re: sky2 bonding problem, 802.3ad

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Date:	Thu, 15 Feb 2007 22:09:40 +0100
From:	Holger Eitzenberger <holger@...eitzenberger.de>
To:	Jay Vosburgh <fubar@...ibm.com>
Cc:	shemminger@...ux-foundation.org,
	sk-drivers@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: Re: sky2 bonding problem, 802.3ad

Jay Vosburgh <fubar@...ibm.com> writes:

> 	I'm unfamiliar with your particular switch, but usually this
> kind of problem with bonding 802.3ad is in the switch interaction.  The
> switches I have (Cisco) require that 802.3ad mode be explicitly enabled
> on whichever ports it is desired on, so it may be worthwhile to check
> your switch and make sure that it really is configured for 802.3ad on
> the sky2 ports.

I am currently using port 1&2 and port 9&10 for bonding and have
configured all four ports for the same aggregator ID 1, LCAP enabled.
I also switched ports, that is, I changed host1 from using port 1&2 to
use port 9&10 and vice versa.  Note that I also used sk98lin which
worked in my setup also.  Do you still think it is a misconfigured
switch?

> 	If the switch is configured, you may want to also check to see
> if it has counters for LACPDUs sent and received.  If the switch is not
> sending and receiving LACPDUs on the appropriate ports, then it's more
> likely to be a communications problem somewhere (vs. an 802.3ad
> negotiation problem).

I will check tomorrow morning whether I see the LACPDUs in the log and
report.

Any more tests which may be helpfull?

Thanks.  /holger
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