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On 11/28/2018 6:37 AM, Minjun Hong wrote:
> "/var/log/neutron/neutron-linuxbridge-agent.log"
> 2018-11-28 17:41:45.593 2476 INFO 
> neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent 
> [-] Interface mappings: {'provider': 'enp1s0f1'}
> 2018-11-28 17:41:45.593 2476 INFO 
> neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent 
> [-] Bridge mappings: {}
> 2018-11-28 17:41:45.624 2476 INFO 
> neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent 
> [-] Agent initialized successfully, now running...
> 2018-11-28 17:41:45.901 2476 INFO 
> neutron.plugins.ml2.drivers.agent._common_agent 
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] RPC agent_id: 
> lba0369fa2714a
> 2018-11-28 17:41:45.907 2476 INFO neutron.agent.agent_extensions_manager 
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Loaded agent 
> extensions: []
> 2018-11-28 17:41:46.121 2476 INFO 
> neutron.plugins.ml2.drivers.agent._common_agent 
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Linux bridge agent 
> Agent RPC Daemon Started!
> 2018-11-28 17:41:46.122 2476 INFO 
> neutron.plugins.ml2.drivers.agent._common_agent 
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Linux bridge agent 
> Agent out of sync with plugin!
> 2018-11-28 17:41:46.512 2476 INFO 
> neutron.plugins.ml2.drivers.linuxbridge.agent.arp_protect 
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Clearing orphaned 
> ARP spoofing entries for devices []
> 2018-11-28 17:41:47.020 2476 INFO 
> neutron.plugins.ml2.drivers.linuxbridge.agent.arp_protect 
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Clearing orphaned 
> ARP spoofing entries for devices []
> 2018-11-28 17:42:45.981 2476 ERROR 
> neutron.plugins.ml2.drivers.agent._common_agent [-] Failed reporting 
> state!: MessagingTimeout: Timed out waiting for a reply to message ID 
> 20ef587240864120b878559ab821adbf

Your neutron linuxbridge agent is failing to communicate with the 
neutron server over RPC, so vif plugging (on the compute host) is 
failing. Check the RPC configuration between the neutron linuxbridge 
agent and the server and make sure the agent is reporting in (I think 
there is a neutron services or agents command or something to make sure 
it's "up").

-- 

Thanks,

Matt