[openstack-dev] [midonet] ping cannot work from VM to external gateway IP.

Duarte Nunes duarte at midokura.com
Wed Dec 16 19:34:45 UTC 2015


On Wed, Dec 16, 2015 at 12:20 PM Li Ma <skywalker.nick at gmail.com> wrote:

> Updated:
>
> Lots of ARP requests from external physical router to VM are catched
> on the physical NIC binded to provider router port.
>
> It seems that external physical router doesn't get answers to these
> ARP requests.
>

Just in case, could you open an issue in our jira
<http://midonet.atlassian.net>, when you have time, with debug logs from
the compute and gateway node while running this ping?

Thanks,
Duarte


>
> On Wed, Dec 16, 2015 at 8:08 PM, Li Ma <skywalker.nick at gmail.com> wrote:
> > Hi Midoers,
> >
> > I have a platform running Midonet 2015 (I think it is the last release
> > when you switch to 5.0).
> > I cannot ping from VM to external gateway IP (which is set up at the
> > physical router side).
> >
> > VM inter-connectivity is OK.
> >
> > When I tcpdump packets on the physical interface located in the gateway
> node,
> > I just grabbed lots of ARP requests to external gateway IP.
> >
> > I'm not sure how midonet gateway manages ARP?
> > Will the ARP be cached on the gateway host?
> >
> > Can I specify a static ARP record by 'ip command' on gateway node to
> > solve it quickly (not gracefully)?
> >
> > (Currently I'm in the business trip that cannot touch the environment.
> > So, I'd like to get some ideas first and then I can tell my partners
> > to work on it.)
> >
> > Thanks a lot,
> >
> > --
> >
> > Li Ma (Nick)
> > Email: skywalker.nick at gmail.com
>
>
>
> --
>
> Li Ma (Nick)
> Email: skywalker.nick at gmail.com
>
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