external hosts unable to ping instance

asked 2014-02-18 12:46:36 -0500

kratkinson gravatar image

Hello, I am trying to perform an allinone deployment with an existing LAN using virtualbox. I have followed the instruction mentioned here: http://openstack.redhat.com/Neutron_with_existing_external_network (http://openstack.redhat.com/Neutron_w...) , only difference is I am using a Grizzly release with Quantum.

I was able to perform the above procedure with Quantum, and I am able to ping and ssh into the created instance using cirros from the allinone deployment. the problem is, I am unable to ping/ssh from any other hosts that is currently located on the LAN (or even my host windows machine). I have set up the appropriate floating IP pool, I even tried to open up the iptables to only have: :quantum-postrouting-bottom - [0:0] -A POSTROUTING -o eth0 -j MASQUERADE :quantum-openvswi-sg-fallback - [0:0] -A FORWARD -i eth0 -j ACCEPT -A FORWARD -o eth0 -j ACCEPT

Tried to enable IP forwarding and tried to put eth0 in promiscuous mode. Neither seem to work.

Please let me know if you need additional information.

Thanks in advance.

edit retag flag offensive close merge delete

1 answer

Sort by ยป oldest newest most voted

answered 2014-02-19 07:18:28 -0500

Sadique Puthen gravatar image

Are you able to ping the external gateway from allinone system? like # ping gateway-ip

Are you able to ping the external gateway from namespace? Like # ip netns exec qrouter-xxxx ping gateway-ip

edit flag offensive delete link more


Yes, from the allinone system I am able to ping the external gateway quantum creates. I was also able to ping the external gateway from namespace. However, I did notice from the allinone system, I am unable to ping the gateway on my existing LAN. Could that be the problem?

kratkinson gravatar imagekratkinson ( 2014-02-19 08:54:18 -0500 )edit

Yes, that is what I asked in my previous command. I was asking whether you can ping the LAN gateway from allinone system and from namespace, not the quantum default gateway. They should be pingable for floating ips to work.

Sadique Puthen gravatar imageSadique Puthen ( 2014-02-20 04:25:33 -0500 )edit

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower


Asked: 2014-02-18 12:46:36 -0500

Seen: 466 times

Last updated: Feb 19 '14