who is using multiple failover pairs on the same server

[Glenn Satchell]

>From: "Gordon A. Lang" <glang at goalex.com>
>To: <dhcp-users at isc.org>
>Subject: who is using multiple failover pairs on the same server
>Date: Thu, 7 Aug 2008 03:06:03 -0400
>
>I am using 3.1.1.
>
>I have four servers, A, B, C, and D.
>
>First failover pair is A-B where A is primary.
>Second failover pair is B-C where B is primary.
>Third failover pair is C-D where C is primary.
>(yes, there is a legitimate reason for wanting this)
>
>Has anyone experienced any issues with this sort of setup?
>I've heard from some people that they had various difficulties
>with anything other than simple one to one pairing.  What I'm
>wondering is if maybe the problems he experienced was just
>a misconfiguration, or maybe a problem fixed in version 3.1.1.
>
>Anyone?

I set up a network once where we had a single central server, and
several remote offices. The subnet in each remote office had the
centralserver and the respective local server as the failover peers for
that subnet. Seemed to work quite well. I ended up building the
dhcpd.conf file from separate components so that the right subnet
definitions were included for each particular server. We did this for
redundancy - a failed link with the central site should still allow
dhcp to continue operating.

Your system should work ok. Just remember to get the failover pair
statements to match up properly, and the right failover name in each
pool definition. A bit of testing should confirm that yo have
everything right.

regards,
-glenn