whishlist - trigger event after dhcpd failover partner is down

Stefan Bauer stefan.bauer at cubewerk.de
Mon Sep 19 13:44:07 UTC 2011

On Mon, 19 Sep 2011 23:42:05 +1000, "Glenn Satchell"
<glenn.satchell at uniq.com.au> wrote:
> There is the auto-partner-down statement which specifies a delay before
> automatically switching the surviving member to partner down mode.
> The real difficulty is detecting failure of the partner in a reliable
> There are many possibilities where the network can be partitioned, each
> dhcp server is working and can see it's clients but the two servers
> see each other (think about a wan link going down between two sites for
> example). Thus using an external script with local knowledge about
> topology, and possible alternate paths for connectivity allows the local
> admin to work this stuff out. A TCP timeout may not necessarily be the
> most reliable way to do this, but if it is, then the local admin is in
> best position to work this out.

Excellent! Thanks for pointing that out. 


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