In tenant network interconnection

asked 2013-02-14 16:31:32 -0600


I try to configure Folsom/Quantum/Ovs/GRE on Ubuntu 12.04 on a multi-node base. One controller host (Horizon, keystone, glance, cinder, quantum server, network controller), two compute nodes.

I created 2 networks each associated to a subnet ( and I created through the horizon dashboard 2 Vms attached one on the first network, and the other on the second. Each of my VMs get an ip with the dhcp protocol ( and

I created a routeer for tenant project_one through the quantum cli. I attached the router to both networks.

I added route to the other network in each VM. ip route add via on the first VM ip route add via on the second VM

Now from VMs if I ping router network IP in subnet, it works. on : ping works ping doesn't

      on :
                  ping works
                  ping doesn't

I am ready to send any configuration information.

Any clue to get this working would be appreciated.



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3 answers

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answered 2013-02-15 09:51:43 -0600

Thanks dan wendlandt, that solved my question.

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answered 2013-02-15 09:51:30 -0600

Tanks a lot Dan,

I added rules for ICMP traffic to default security group, then restarted the nova-compute service on both node to be able to ping.

BR, Jean-Luc

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answered 2013-02-14 17:00:15 -0600

danwent gravatar image

My guess would be that you are also using security groups, which drop pings by default. If you allow ICMP for the security groups that both of the VMs are in, I think you will be able to ping the VMs as well. Router interfaces don't have security groups, and hence the pings work right away.

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Asked: 2013-02-14 16:31:32 -0600

Seen: 80 times

Last updated: Feb 15 '13