[Openstack-operators] Problems understanding/running the flat network mode

Christian Wittwer wittwerch at gmail.com
Mon Aug 15 16:11:36 UTC 2011


Hi,
I found a solution. The problem was, that I had no ip on that host in
that subnet.
Therefore all packages to 192.168.27.0/24 were sent to my default gw,
which was wrong.
I created a "virtual" interface on the bridge, where the instances are
connected to.

br100:0   Link encap:Ethernet  HWaddr 00:22:19:6d:87:3a
          inet addr:192.168.27.100  Bcast:192.168.27.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

After that, the network is running and I'm able to ping my instances.

But now I'm looking into flat dhcp mode, because I'm going to have
windows instances, and the ip injection doesn't work with windows
afaik.

Cheers,
Chris

2011/8/15 Shang Wu <shang at ubuntu.com>:
> Hi Chris,
>
> On 11-08-13 06:16 PM, Christian Wittwer wrote:
>> I can startup a instance, it gets a ip from that pool, but I'm unable
>> to ping it.
>
> The first thing that come to my mind is that you need to run the
> euca-authorize command to enable the ICMP protocol. If you haven't done
> it already, this might be something worth look into.
>
> Regards,
>
> --
> Shang Wu
>



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