On Mar 17, 2010, at 7:22 AM, Dan White wrote: > We've experienced two types of problems from time to time: > > The servers stop balancing their addresses, and one server starts to > exhibit 'peer holds all free leases' in its logs, in which case we need to > restart the dhcpd process(es) to force a rebalance.
We experience this problem from time to time as well, and I have yet to find its cause. We also 'fix' it by restarting the dhcpd daemon. > > In some cases, and I'm not sure which equipment may be to blame, if one > server goes down then the other server will not hand out addresses to > clients which had originally received addresses from the failed server. > We've dealt with that by balancing our lease times with our MTTR for a > failed server. From the dhcpd.conf man page it seems the solution to this problem is to put the remaining active server into the PARTNER-DOWN state. Aside from the 'peer holds all free leases' error Dan mentioned, ISC DHCP's load balancing and failover has worked very well for us. -- Blake Covarrubias
