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[Bug 1642303] [NEW] neutron multiple external flat networks fails

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Public bug reported:

Setting up one external flat network works fine. However when trying to
setup more than one external flat network, neutron-openvswitch-agent
disconnects ovs continously. This bug will be opened in both kolla and
neutron since it is not determined what is causing this.

ENV: kolla stable/newton; containers are centos source.

--------- relevant kolla config settings --------------------
/etc/kolla/globals.yml
neutron_bridge_name: "br-vlan802,br-vlan805" 
neutron_external_interface: "bond0.802,bond0.805"

#no dvr, lbaas, qos, etc
-------------------------------------------------------------

config files and logs can be found here
http://paste.openstack.org/show/589464/
http://paste.openstack.org/show/589286/
http://paste.openstack.org/show/589276/

snipplet from ovs log. 805 and 802 are the external bridges. They get disconnected as soon as they connect. br-tun and br-int does not show this behavior.
=> openvswitch/ovs-vswitchd.log <==
2016-11-15T12:15:51.586Z|01155|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:52.585Z|01156|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:52.586Z|01157|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:52.587Z|01158|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:53.584Z|01159|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:53.585Z|01160|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:53.586Z|01161|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:54.585Z|01162|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:54.586Z|01163|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:54.587Z|01164|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:55.584Z|01165|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:55.586Z|01166|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:55.587Z|01167|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:56.584Z|01168|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:56.586Z|01169|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:56.587Z|01170|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:57.585Z|01171|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:57.586Z|01172|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:57.586Z|01173|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:58.585Z|01174|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:58.586Z|01175|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:58.587Z|01176|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:15:59.585Z|01177|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:15:59.586Z|01178|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
2016-11-15T12:15:59.587Z|01179|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:16:00.585Z|01180|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:16:00.587Z|01181|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
2016-11-15T12:16:00.587Z|01182|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:16:01.584Z|01183|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
2016-11-15T12:16:01.585Z|01184|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
2016-11-15T12:16:01.586Z|01185|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
2016-11-15T12:16:02.585Z|01186|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...

** Affects: kolla
     Importance: Undecided
         Status: New

** Affects: neutron
     Importance: Undecided
         Status: New

** Also affects: neutron
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1642303

Title:
  neutron multiple external flat networks fails

Status in kolla:
  New
Status in neutron:
  New

Bug description:
  Setting up one external flat network works fine. However when trying
  to setup more than one external flat network, neutron-openvswitch-
  agent disconnects ovs continously. This bug will be opened in both
  kolla and neutron since it is not determined what is causing this.

  ENV: kolla stable/newton; containers are centos source.

  --------- relevant kolla config settings --------------------
  /etc/kolla/globals.yml
  neutron_bridge_name: "br-vlan802,br-vlan805" 
  neutron_external_interface: "bond0.802,bond0.805"

  #no dvr, lbaas, qos, etc
  -------------------------------------------------------------

  config files and logs can be found here
  http://paste.openstack.org/show/589464/
  http://paste.openstack.org/show/589286/
  http://paste.openstack.org/show/589276/

  snipplet from ovs log. 805 and 802 are the external bridges. They get disconnected as soon as they connect. br-tun and br-int does not show this behavior.
  => openvswitch/ovs-vswitchd.log <==
  2016-11-15T12:15:51.586Z|01155|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:52.585Z|01156|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:52.586Z|01157|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:52.587Z|01158|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:53.584Z|01159|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:53.585Z|01160|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:53.586Z|01161|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:54.585Z|01162|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:54.586Z|01163|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:54.587Z|01164|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:55.584Z|01165|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:55.586Z|01166|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:55.587Z|01167|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:56.584Z|01168|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:56.586Z|01169|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:56.587Z|01170|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:57.585Z|01171|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:57.586Z|01172|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:57.586Z|01173|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:58.585Z|01174|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:58.586Z|01175|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:58.587Z|01176|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:15:59.585Z|01177|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:15:59.586Z|01178|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:15:59.587Z|01179|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:16:00.585Z|01180|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:16:00.587Z|01181|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:16:00.587Z|01182|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:16:01.584Z|01183|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connecting...
  2016-11-15T12:16:01.585Z|01184|rconn|INFO|br-vlan802<->tcp:127.0.0.1:6633: connected
  2016-11-15T12:16:01.586Z|01185|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connection closed by peer
  2016-11-15T12:16:02.585Z|01186|rconn|INFO|br-vlan805<->tcp:127.0.0.1:6633: connecting...

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