Re: [Xen-devel] Stimulating domains to send gratuitous ARPs

["Zhu Han" <schumi.han@xxxxxxxxx>]

On 7/5/07, Ian Pratt <Ian.Pratt@xxxxxxxxxxxx> wrote:
> For bond case you described, you don't need to send ARPs, you just need to send 
> any packet with the right src MAC to cause the switches to reconfigure. Since 
> the bond driver likely already maintains a list of MAC addrs its operating on 
> behalf of this is easy.
Ian, that's right.

But you can't depend on it just like you can't depend on the VM
continues to talk with the right mac address after the migration. :-)

> Ian
>
>
> > Simon
> >
> > > -----Original Message-----
> > > From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxxxxx]
> > > Sent: Thursday, July 05, 2007 3:46 PM
> > > To: Graham, Simon
> > > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
> > > Subject: Re: [Xen-devel] Stimulating domains to send gratuitous ARPs
> > >
> > > On Thu, 2007-07-05 at 14:41 -0400, Graham, Simon wrote:
> > > > I accept that this is not very nice and we should probably have a
> > > more
> > > > organized/documented way to do this but I'm not sure what would be
> > > > appropriate; any suggestions?
> > >
> > > A usespace tool to send such an ARP would be a very useful thing to
> > > have, if it doesn't already exist.
> > >
> > > The gratuitous arping in netfront is not very popular with the
> > upstream
> > > Linux folks so this functionality is not in the paravirt_ops patches
> > > which are going upstream, so we'd need such a tool in the end anyway.
> > >
> > > Ian.
> > >
> > >
> > >
> > >
>
>
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--
best regards,
hanzhu

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