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Re: [Xen-users] 8th DomU can ping bridge but not internet


  • To: "Xen users mailing list" <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Peter Braun" <xenware@xxxxxxxxx>
  • Date: Sun, 27 May 2007 21:14:09 +0200
  • Delivery-date: Sun, 27 May 2007 12:12:28 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

SOLVED! :)

The problem was caused by ISP/colohouse.

Server is connected via single ethernet port and there was MAC filter
to 8 MACs per port.

Now they removed MAC filter on ethernet port and new domUs without problem.

I would like to thank people here on mailing-ling, hundred_  and
FuzzyB on ##xen on irrc.freenode.net and grifferz of bitfolk.com for
asistence.

Br

Peter Braun

2007/5/27, Igor Chubin <igor@xxxxxxx>:
...
> > Hi,
> >
> > am specyfiing MAC for every DomU. So based on your recommendation I
> > changed vif for 8th DomU to vif=[ 'ip=x.x.x.x' ] only - without
> > specifying MAC - situation hasnt changed.
> >
> > Still not able to create new domU with internet access.
> >
> > Any other idea?
> >
>
>
> Another idea.
>
> Try to load netloop module with the nloopbacks parameter:
>
> modprobe netloop nloopbacks=64
>

Silly idea. Sorry.

As far as I remember, you've said
that can ping domU from the dom0.

If the problem was related to number of vif,
you could ping not from dom0, neither from domU.


Another idea.

Try to investigate all of the interfaces
(eth0 inside the 8th domU, bridge of the dom0
and the dom0 interface, that getting connected
to the bridge)
with tcpdump while pinging from domU.

Find where packets are getting lost.

> AFAIK, by default nloopbacks=8 or 7
>
> > Peter
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
>
> --
> WBR, i.m.chubin
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

--
WBR, i.m.chubin



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