[openstack-dev] [neutron] high dhcp lease times in neutron deployments considered harmful (or not???)

Cory Benfield Cory.Benfield at metaswitch.com
Wed Feb 4 09:41:57 UTC 2015


On Wed, Feb 04, 2015 at 08:59:54, Kevin Benton wrote:
> I proposed an alternative to adjusting the lease time early on the in
> the thread. By specifying the renewal time (DHCP option 58), we can
> have
> the benefits of a long lease time (resiliency to long DHCP server
> outages) while having a frequent renewal interval to check for IP
> changes. I favored this approach because it only required a patch to
> dnsmasq to allow that option to be set and patch to our agent to set
> that option, both of which are pretty straight-forward.

It's hard to see a downside to this proposal. Even if one of the other ideas goes forward as well, a short DHCP renewal interval feels like a very good idea to me.

Cory


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