From: Olivier Blanc <olivier.blanc@dgfip.finances.gouv.fr>
To: James Harper <james.harper@bendigoit.com.au>
Cc: xen-devel@lists.xensource.com
Subject: RE: Xen 3.3.1 live migration : unsolicited ARP
Date: Fri, 29 May 2009 13:44:11 +0200 [thread overview]
Message-ID: <1243597451.10160.43.camel@bibi-3> (raw)
In-Reply-To: <AEC6C66638C05B468B556EA548C1A77D016DD508@trantor>
> >
> > I would like to understand the condition that makes the live
> migration
> > process to generate the unsolicited ARP REPLY, as I could never get
> it
> > to be generated !
> >
> > Do you have any pointer to help me understand the process ?
> >
>
> Do you have STP enabled on your bridge? If enabled, it could delay the
> bridge port coming up for long enough that the ARP packet gets lost.
>
> James
No STP is off in my bridge and forwardDelay is set to 0.
And the bridge port is ready very quickly, if I set the following
parameters value in the "ntable" of the bridge to
reachable -> 12
delay_probe -> 20
ucast_probes -> 0
Then I lose only 2 ping transactions (less than 2 secs) to the migrated
DOMU.
Olivier
prev parent reply other threads:[~2009-05-29 11:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-29 5:56 Xen 3.3.1 live migration : unsolicited ARP Olivier Blanc
2009-05-29 10:39 ` James Harper
2009-05-29 11:44 ` Olivier Blanc [this message]
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