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Bridge network interface for VM networks not working in openstack ubuntu

asked 2013-09-15 23:57:10 -0600

RHK gravatar image

updated 2016-08-11 01:40:16 -0600

darragh-oreilly gravatar image


installed openstack compute server on cloud ubuntu 12.04.3 LTS server, when we configure bridge network interface for VM communications the bridge is not working properly.

when we creating the network for compute VM's using below command,

nova network-create private --fixed-range-v4= --bridge-interface=br100

its creating bridge network, but VM's are not taking the ip series its taking base os IP series.

when we restart the server some times bridge is not working. Any one plz give the solution on bridge network issue on ubuntu.

Regards, RHK

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I don't understand what you mean by "VM's are not taking the ip series its taking base os IP series". Are you saying the VMs cannot talk to each other or you cannot reach them from the host?

Torsten Schlabach gravatar imageTorsten Schlabach ( 2013-10-09 02:57:23 -0600 )edit

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answered 2016-08-10 18:45:08 -0600

ric_br gravatar image

updated 2016-08-10 18:46:10 -0600

You should add more information, it is difficult to help with such vague error description.

A starting point is the ip netns command

1 ip netns - lists the network namespaces

2 ip netns exec namespace-ID ping vm ip with you can test teh connectivty between vms and dhcp or the gateway for exemple

below some good sources for information on networking (

good luck

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the question seems to be about nova-network and not neutron

darragh-oreilly gravatar imagedarragh-oreilly ( 2016-08-11 01:41:06 -0600 )edit

You are right, I also saw after my answer that the question is from 2013. so i'm little late :-)

ric_br gravatar imageric_br ( 2016-08-11 09:05:55 -0600 )edit

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Asked: 2013-09-15 23:57:10 -0600

Seen: 541 times

Last updated: Aug 10 '16