DHCP Lease in Failover Configuration

Glenn Satchell Glenn.Satchell at uniq.com.au
Tue Jul 11 11:54:07 UTC 2006

>Date: Tue, 11 Jul 2006 01:38:32 -0400
>From: "Jiann-Ming Su" <sujiannming at gmail.com>
>To: dhcp-users at isc.org
>Subject: DHCP Lease in Failover Configuration
>I seem to be having some issues with the dhcp lease time defaulting to
>one day even though the configuration doesn't specify this.  This only
>happens in failover mode.  If the dhcp servers are taken out of
>failover mode, the dhcp lease time is set as specified in the dhcp
>server configuration.  Is anyone else experiencing this, or is there a
>fix for it?  Thanks for any tips.
>Jiann-Ming Su

With failover the client is initially offered a lease equal to MCLT.
This allows that lease to be copied to the failover peer, etc. The next
time the client renews it gets the normal (default, or whatever it asked
for) lease period.


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