[Openstack] Single router connected to multiple networks

Kaustubh Kelkar kaustubh.kelkar at casa-systems.com
Thu May 12 22:29:12 UTC 2016

You could trace the packets at the qr-xxxx and qg-xxxx interface within the router namespace. Check if they are making it to the qr- interface.

The setup you described worked for me with Kilo release. However my lab had iptables rules disabled with the help of this link: https://gist.github.com/djoreilly/db9c2d32a473c6643551


From: Remo Mattei [mailto:Remo at Italy1.com]
Sent: Thursday, May 12, 2016 1:41 AM
To: Jagga Soorma <jagga13 at gmail.com>
Cc: openstack <openstack at lists.openstack.org>
Subject: Re: [Openstack] Single router connected to multiple networks

Sec groups should be fine since default is to accept all traffic internally you need to make sure your router has all the networks so it can route. If not you can do some work around like create a static route Etc.


Inviato da iPhone

Il giorno 11 mag 2016, alle ore 22:26, Jagga Soorma <jagga13 at gmail.com<mailto:jagga13 at gmail.com>> ha scritto:
I am running kilo but that should be ok.  Did you have to do anything special to create this environment or just the basic stuff.  Any changes needed on the security groups (doubt it)?  Just wondering what might be causing this setup not to work for me when the single network setup works just fine.


On Wed, May 11, 2016 at 10:19 PM, Remo Mattei <Remo at italy1.com<mailto:Remo at italy1.com>> wrote:
It is possible I have set it up today for a test without any issue on both Liberty and mitaka

Inviato da iPhone

Il giorno 11 mag 2016, alle ore 21:44, Jagga Soorma <jagga13 at gmail.com<mailto:jagga13 at gmail.com>> ha scritto:
Hey Guys,

I am trying to setup a network within a project with a single router connected to 2 priv networks (attached is a screenshot of the network).  If I have a single network connected to that router, my instances work fine.  However, when I try to do the setup with 2 networks my instances on both networks can't get to the metadata service.  I can't ping the gateway for each network either.  I believe this setup should be possible and wondering if I am missing something very basic here.  Any help would be appreciated.

ext-net ------- router ----- network1 -- {instances}
                   --------- network2 -- {instances}

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