<HTML dir=ltr><HEAD><TITLE>RE: Failover on a large DHCP system</TITLE>
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<DIV dir=ltr><FONT face=Arial color=#000000 size=2>I use omapi with 3.1.1 currently with 38k active leases without any issues. I add it to dhcp with omapi then I write it out to a global include file for restarts. The reason you are seeing it after a restart is because it get's wrote into the dhcpd.leases file. It will be removed from the lease file after a few rotations. It's not immediately. We currently use a 24 hour lease time. I haven't restarted my dhcp server in months and we add/remove statics quite a bit. If someone gives me an idea of what they need in a script I can convert my current perl script to be usable by the rest of the world.</FONT></DIV>
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<DIV dir=ltr><FONT face=Arial size=2>Brad</FONT></DIV></DIV>
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<FONT face=Tahoma size=2><B>From:</B> dhcp-users-bounces@lists.isc.org on behalf of Nicholas F Miller<BR><B>Sent:</B> Mon 5/11/2009 7:55 AM<BR><B>To:</B> dhcp-users@lists.isc.org<BR><B>Subject:</B> RE: Failover on a large DHCP system<BR></FONT><BR></DIV>
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<P><FONT size=2>That was our original thought but after some testing and talk of <BR>omapi's demise and memory leaks I am hesitant to go the omapi route. <BR> From our testing the changes made via omshell take precedence over <BR>the config even after a restart. This could be a real headache for <BR>trouble shooting. I think the best solution is to continue using <BR>restarts to add and remove hosts from DHCP. I took a more <BR>comprehensive look at our DHCP server and see that we only have around <BR>20,000 active leases during busy times and around 105,000 pool <BR>addresses. From what people have been saying here that isn't all that <BR>large of a load.<BR><BR>_________________________________________________________<BR>Nicholas Miller, ITS, University of Colorado at Boulder<BR><BR><BR><BR>On May 9, 2009, at 6:00 AM, dhcp-users-request@lists.isc.org wrote:<BR><BR>> You could do both -- use omshell to make the changes, but also update<BR>> dhcpd.conf. That way you have the benefit of instant change without <BR>> reload<BR>> and the security of a configuration file.<BR><BR>_______________________________________________<BR>dhcp-users mailing list<BR>dhcp-users@lists.isc.org<BR><A href="https://lists.isc.org/mailman/listinfo/dhcp-users">https://lists.isc.org/mailman/listinfo/dhcp-users</A><BR></FONT></P></DIV></BODY></HTML>