Reducing the value of max-lease-time and default-lease-time

[Mark Krenz]

I help run the dhcp servers that serve several thousand hosts. I've been 
considering turning down the max-lease-time and default-lease-time by 
half their value so that an upcoming migration to another set of DHCP 
servers will have more flexibility if we need to switch back.

Is there anything I should be considering before changing these values 
or should I be ok?  I looked around online for any warnings about doing 
this but couldn't find anything.  Also, I'd be doing this lease time 
change a few days in advance of the switchover so it should be plenty of 
time for all the hosts to pick up the new lease times.

Thanks,
Mark