best practice for moving subnets?
John Wobus
jw354 at cornell.edu
Fri Nov 19 17:40:32 UTC 2010
> There are a lot of changes to these hostentries every day. If you
> would write them into the configfile, the dhcpd would do nothing
> else than reloading its config the hole day. We wouldn't be able to
> use DHCP at all.
> So we don't write the hostentries into the config. We write them
> into the leasedatabase. This way we can do it without restarting the
> dhcpd.
We reload the config as frequently as every 2 minutes when there are
changes. We have 100K host entries. We treat our lease database
as rather expendable in a pinch (only 1-hour max leases) but then we
don't use DDNS.
John Wobus
Cornell CIT
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