The minimum amount of time before any node will be assigned a new IP should be the lease time configured on the DHCP server. You could try a couple of things: increasing the IP range ("pool"), so as to not force reuses because the server is running shoirt of available IP addresses to hand out, and increasing the lease time itself. i think that the default behaviour of the dhcp client to to request the IP it previously had, so that should help. Benoit Gariod -----Original Message----- From: remote [mailto:remote@leat.ruhr-uni-bochum.de] Sent: Friday, November 07, 2003 3:40 PM To: suse-security@suse.com Subject: [suse-security] DHCP and IP Numbers ? Hi ! I have a question about how DHCP is working. You see, I try to set up a small cluster of boxes to do some parallel computing. The Name Resolution in this cluster is supposed to work with DHCP. Things seem to run smoothly, but after some time, my parallel process is interrupted, with no error message at all. I `d like to know if DHCP reassigns new IPs after a certain amount of time and if this could interrupt my parallel processes (I tried both MPICH and rsh). Any suggestions ? Thanks, Jörg