Public bug reported: * Description: After switching openvswitch agent to the 'native' OpenFlow interface (of_interface=native) the public network and the tunnel networks are flooded with ARP packets (see [1] for the tcpdump sample).
* Environment: - DevStack stable/mitaka - 1 controller/compute and 2 compute nodes - configuration from [2] - ubuntu 14.04 * How to reproduce: 0. (WARNING) the following steps will flood the network, so it is recommended to use a virtual network as the provider network 1. Deploy DevStack with access to the provider network (see [2]; 1 controller + 2 compute nodes) 2. Set of_interface=native in the [ovs] section of /etc/neutron/plugins/ml2/ml2_conf.ini 3. restart l2 agents on all nodes 4. login to the default gateway and send a broadcast ARP request to the devstack's public network (arping -UD <gateway_ip>) * Expected result: normal network operation * Actual result: the public network and the tunnel network are flooded with ARP packets [1] http://paste.openstack.org/show/507292/ [2] http://docs.openstack.org/developer/devstack/guides/neutron.html#devstack-configuration ** Affects: neutron Importance: Undecided Assignee: Ilya Chukhnakov (ichukhnakov) Status: In Progress ** Changed in: neutron Assignee: (unassigned) => Ilya Chukhnakov (ichukhnakov) ** Changed in: neutron Status: New => Confirmed ** Changed in: neutron Status: Confirmed => In Progress -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1588393 Title: Switching OpenFlow interface to 'native' causes network loop Status in neutron: In Progress Bug description: * Description: After switching openvswitch agent to the 'native' OpenFlow interface (of_interface=native) the public network and the tunnel networks are flooded with ARP packets (see [1] for the tcpdump sample). * Environment: - DevStack stable/mitaka - 1 controller/compute and 2 compute nodes - configuration from [2] - ubuntu 14.04 * How to reproduce: 0. (WARNING) the following steps will flood the network, so it is recommended to use a virtual network as the provider network 1. Deploy DevStack with access to the provider network (see [2]; 1 controller + 2 compute nodes) 2. Set of_interface=native in the [ovs] section of /etc/neutron/plugins/ml2/ml2_conf.ini 3. restart l2 agents on all nodes 4. login to the default gateway and send a broadcast ARP request to the devstack's public network (arping -UD <gateway_ip>) * Expected result: normal network operation * Actual result: the public network and the tunnel network are flooded with ARP packets [1] http://paste.openstack.org/show/507292/ [2] http://docs.openstack.org/developer/devstack/guides/neutron.html#devstack-configuration To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1588393/+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
