OpenStack ODL (with VXLan) -> br-int only ?

asked 2015-11-19 06:54:13 -0600

updated 2015-11-19 06:54:57 -0600

Hello everybody,

I have a setup with OpenStack Kilo with the following nodes:

  • "controller" (Controller Node)
  • "odl-controller" (OpenDayLight Node)
  • "compute2" (one compute node)
  • "compute3" (another compute node)
  • "network" (network node)

All of them run Ubuntu 14.04 LTS with default OpenStack installation + default OpenDayLight Installation. I followed the wiki and everything went smooth. Then I createad a VM on compute2 and another VM on compute3. Then, I went into compute2 console and I typed:

ovs-vsctl show

and the result is

root@compute2:~# ovs-vsctl show
    Manager "tcp:"
    Bridge br-int
        Controller "tcp:"
            is_connected: true
        fail_mode: secure
        Port br-int
            Interface br-int
        Port "tap91e68e7c-75"
            Interface "tap91e68e7c-75"
    ovs_version: "2.3.2"

Now I am wondering: why there is "br-int" bridge only ? I was supposing to find also "br-tun" or at least another bridge. Is this normal ? What am I doing wrong ?

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2 answers

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answered 2015-12-15 11:15:47 -0600

Gabriel Peral gravatar image

Hello Luigi! So far it seems to be all right, you don't see any other bridges unless you have the option of l3 fowarding enabled on the ODL controller, if you set this option up, you will see at the output of the ovs-vscl show command another bridge, named br-ex, which is supossed is the bridge which conect the vm with the external network.

So if everything is done right, you have to be able to comunicate from one vm to the other.

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answered 2016-11-24 01:52:06 -0600

Arun gravatar image

Verify whether following is set in your local.conf on your opnstack controller


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Asked: 2015-11-19 06:54:13 -0600

Seen: 504 times

Last updated: Dec 15 '15