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2016-01-18 22:46:54 -0500 asked a question disable snat for router gateway

In the cli of neutron router-gateway-set, thers is an option of disable snat. http://docs.openstack.org/cli-referen...

Does that mean i can create a tenant network and the packet will go out with the same fixed ip of the vm? Assume the tenant network created is routable or identifiable in the physical network. I tried to disable snat for the router gateway, but the packet wasn't going out from the external interface. Do i need to edit some iptable rules or the disable snat option doesn't work?

2016-01-18 22:17:28 -0500 commented answer external network packets to network node

Hi dbaxps, In case of centralized virtual router, which component is responsible for the proxy arp from the physical router?

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2016-01-15 16:33:37 -0500 commented answer external network packets to network node

Hi dbaxps, How can i view the fip namespace? It is not visible using ip netns. Why qg- port of router namespace is not shown in your diagram ?

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2016-01-15 14:57:37 -0500 asked a question external network packets to network node

I have done a kilo ubuntu installation of openstack. One thing i noticed was the network node's external interface is unnumbered. Then how does the external router forwards the packet to the network node? Suppose a vm has a floating ip . I send a packet to that vm using the floating ip. The nat happens at the network node. How does the packet reached the network node as there is no ip assigned to the interface. I have not configured dvr and l3 agent is running on network node.

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2016-01-14 09:14:23 -0500 commented answer neutron agent-list shows ovs is not up on compute nodes

Hi dbaxps, I am surprised in my situation, but i believe you have encountered these a lot. Thanks for the help. I will definitely try the 3 node controller with db replication to get familiar with these things.

2016-01-14 07:08:22 -0500 commented answer neutron agent-list shows ovs is not up on compute nodes

Hi,Thanks dbaxps and Bipin.

I did nothing except running "service neutron-plugin-openvswitch-agent restart" and "service openvswitch-switch restart" and now neutron agent-list shows that ovs is up for both compute nodes. Why did this happened? Some kind of database inconsistency? Please explain

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2016-01-13 14:59:49 -0500 commented question neutron agent-list shows ovs is not up on compute nodes

service neutron-openvswitch-agent status: unrecongnised service

service neutron-plugin-openvswitch-agent status: start/running

service openvswitch-switch status : start/running

2016-01-13 12:51:55 -0500 asked a question neutron agent-list shows ovs is not up on compute nodes

image description

When i do a neutron agent-list on controller node, it shows ovs agent is dead on both compute nodes. But, when i create a vm ,it is getting a ip and i can access the console of that vm. When i do a nova list, i can see the vm on compute node 1. When i do a ovs-vsctl show on compute node 1, i can see the bridge configurations. I understand there is some reachability issues between controller and compute node. How do i solve this? I understand it is not creating any problem for me, but i want to solve this issue.

Thanks

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2016-01-08 08:01:30 -0500 asked a question linux bridge vs ovs

what is the disadvantage of using linux bridge instead of using ovs? OVS has flow tables which is used to forward the packets. how linux bridge manages the flow tables?

2016-01-07 08:18:39 -0500 commented answer lbaas v2 with haproxy as reference implementation

Hi, Thanks for the details. I think there is also an option to run lbaas v2 without octavia, using the previous haproxy implementation. Can you describe that in details? By that i mean lbaas v1 vs lbaas v2 with haproxy as reference implementation.

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