Date: Thu, 17 Mar 2005 09:15:36 +0200 From: Danny Braniss <danny@cs.huji.ac.il> To: "George V. Neville-Neil" <gnn@neville-neil.com> Cc: ray@redshift.com Subject: Re: too many Gratuitous ARPs Message-ID: <E1DBpEH-000Pto-1P@cs1.cs.huji.ac.il> In-Reply-To: Message from "George V. Neville-Neil" <gnn@neville-neil.com> of "Wed, 16 Mar 2005 11:51:31 PST." <m28y4njrng.wl%gnn@neville-neil.com>
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> At Wed, 16 Mar 2005 11:02:01 +0200, > Danny Braniss wrote: > > This is not my case, no kernel messages, I see the packets. (im mirrowing > > the traffic to another host so that i can 'sniff' it). > > > > the host has indeed two nics, but only one is connected. > > The problem - if indeed it is - only appears on this host, and i have > > several identical ones, that don't show this. > > > > The first thing I would do is look at what is being arped for and then > figure out if there is an application on the machine that you don't > expect to be there. ARPs happen because the machine wants to talk to > another machine. So, you need to find out who it wants to talk to > (the IP address) and why (the program that is the source of the > traffic). The 'Gratuitous ARPs' where being generated by the IPMI/BMC. The net stack in the BMC does not implement ARP, so to keep others happy, it's sending out 'Gratuitous ARP', the good news is that the time can be configured, so that's what we did. thanks, danny
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