"Gerard Henry" <[EMAIL PROTECTED]> wrote: > is it possible to change range ip of a server in production? > i have a server configured to deliver ip from 192.168.128.16 to > 192.168.128.225 > I have to add a secondary server for failover, so i need to > 192.168.128.150 to 192.168.128.250 on this new machine. > > Can i do it with dhcpmgr, tagging this adresses as unusable? i > can't stop the server in prod now.
It should be safe to mark an in-use address "unusable" provided that you then wait for its lease to expire before telling the new server to issue that address. Just marking a leased-out address "unusable" and immediately telling the new server to issue that same address isn't safe because the client will continue to use the address, and if the new server tries to issue the address a clash will be detected and will result in the address being marked "unusable" in the new server too. It's safe to use 'dhcpmgr' or 'pntadm' to mark "unusable" (or simply delete) addresses that are not currently issued to DHCP clients and to then immediately tell the new server to issue those addresses. There are probably lots of these addresses, and they're probably all at one end of the existing 16-225 range because of the strategy that the Solaris DHCP server happens to use when allocating addresses to DHCP clients. What does 'pntadm -P -v 192.168.128.0' show? OttoM. __ ottomeister Discalimer: These are my opinions. I do not speak for my employer. -- ___________________________________________________ Play 100s of games for FREE! http://games.mail.com/ _______________________________________________ SunRay-Users mailing list [email protected] http://www.filibeto.org/mailman/listinfo/sunray-users
