Could you please help to share whether this kind of event is sent by
neutron-server or neutron agent ? I searched neutron code
from [1][2]  this means the agent itself need tell neutron server the
device(VIF) is up then neutron server will send notification
to nova through REST API and in turn consumed by compute node?

[1]
https://github.com/openstack/neutron/tree/master/neutron/notify_port_active_direct
[2]
https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/rpc.py#L264


Best Regards!

Kevin (Chen) Ji 纪 晨

Engineer, zVM Development, CSTL
Notes: Chen CH Ji/China/IBM@IBMCN   Internet: jiche...@cn.ibm.com
Phone: +86-10-82451493
Address: 3/F Ring Building, ZhongGuanCun Software Park, Haidian District,
Beijing 100193, PRC



From:   Matt Riedemann <mriede...@gmail.com>
To:     "OpenStack Development Mailing List (not for usage questions)"
            <openstack-dev@lists.openstack.org>
Date:   04/10/2018 01:56 AM
Subject:        [openstack-dev] [nova] Changes to
            ComputeVirtAPI.wait_for_instance_event



As part of a bug fix [1], the internal
ComputeVirtAPI.wait_for_instance_event interface is changing to no
longer accept event names that are strings, and will now require the
(name, tag) tuple form which all of the in-tree virt drivers are already
using.

If you have an out of tree driver that uses this interface, heads up
that you'll need to be using the tuple form if you are not already doing
so.

[1]
https://urldefense.proofpoint.com/v2/url?u=https-3A__review.openstack.org_-23_c_558059_&d=DwIGaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=8sI5aZT88Uetyy_XsOddbPjIiLSGM-sFnua3lLy2Xr0&m=yyfqhpyjmwq9aUO_EdyVhYZm-8zEDpEYxh2-hPu1kig&s=S5Asyhxw296d0rp-EOCg1VMsKcwVV39i1pGeqkobE2U&e=


--

Thanks,

Matt

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