Public bug reported: Config option "external_network_bridge" was removed in Stein release but in versions Rocky and Queens where it still exists, if it is configured for dvr router it will cause problem with FIP connectivity.
It is like that because some time ago, commit https://github.com/openstack/neutron/commit/88f5e11d8bf820b0124be0f6ec3c2d96011592d9 introduced functionality which avoids connecting trunk ports to the ovs bridge. It is fine in most cases as neutron-ovs-agent is then managing such ports and it works fine but in case when external_network_bridge config option is set, fip gateway port (fg-xxx) is plugged directly into this external bridge and than it isn't managed by neutron-ovs-agent. So dead vlan tag isn't never removed and connectivity don't work. It looks like we are missing code like https://github.com/openstack/neutron/blob/stable/queens/neutron/agent/l3/router_info.py#L658 in https://github.com/openstack/neutron/blob/master/neutron/agent/l3/dvr_fip_ns.py#L153 ** Affects: neutron Importance: Medium Assignee: Slawek Kaplonski (slaweq) Status: Confirmed ** Tags: l3-dvr-backlog -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1835808 Title: DVR router with configured external_network_bridge option don't have external connectivity Status in neutron: Confirmed Bug description: Config option "external_network_bridge" was removed in Stein release but in versions Rocky and Queens where it still exists, if it is configured for dvr router it will cause problem with FIP connectivity. It is like that because some time ago, commit https://github.com/openstack/neutron/commit/88f5e11d8bf820b0124be0f6ec3c2d96011592d9 introduced functionality which avoids connecting trunk ports to the ovs bridge. It is fine in most cases as neutron-ovs-agent is then managing such ports and it works fine but in case when external_network_bridge config option is set, fip gateway port (fg- xxx) is plugged directly into this external bridge and than it isn't managed by neutron-ovs-agent. So dead vlan tag isn't never removed and connectivity don't work. It looks like we are missing code like https://github.com/openstack/neutron/blob/stable/queens/neutron/agent/l3/router_info.py#L658 in https://github.com/openstack/neutron/blob/master/neutron/agent/l3/dvr_fip_ns.py#L153 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1835808/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
