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>I update [1] to auto delete dhcp port if there is no other ports. But after
the dhcp port is deleted, the dhcp service is not usable.

You mean in the case where the segments are in the same L2 domain, right?
If not, I don't understand why we wouldn't expect a segment that was
deleted to stop working....

Have the DHCP agent scheduler subscribe to segment delete and it can
determine if the network needs to be hosted on any more agents.

On Wed, May 18, 2016 at 4:24 AM, Hong Hui Xiao <xiaohhui at cn.ibm.com> wrote:

> I update [1] to auto delete dhcp port if there is no other ports. But
> after the dhcp port is deleted, the dhcp service is not usable. I can
> resume the dhcp service by adding another subnet, but I don't think it is
> a good way. Do we need to consider bind dhcp port to another segment when
> deleting the existing one?
>
> [1] https://review.openstack.org/#/c/317358
>
> HongHui Xiao(肖宏辉) PMP®
>
>
> From:   Carl Baldwin <carl at ecbaldwin.net>
> To:     OpenStack Development Mailing List
> <openstack-dev at lists.openstack.org>
> Date:   05/18/2016 11:50
> Subject:        Re: [openstack-dev] [Neutron][ML2][Routed Networks]
>
>
>
>
> On May 17, 2016 2:18 PM, "Kevin Benton" <kevin at benton.pub> wrote:
> >
> > >I kind of think it makes sense to require evacuating a segment of
> its ports before deleting it.
> >
> > Ah, I left out an important assumption I was making. We also need to
> auto delete the DHCP port as the segment is deleted. I was thinking this
> will be basically be like the delete_network case where we will auto
> remove the network owned ports.
> I can go along with that. Thanks for the clarification.
> Carl
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