hmmmm....don't forget that somewhere in the process the dhcp server does a mac address lookup for machine specific config items. The cool part is that my VOIP phones do a dhcp request and get fed to them a bootserver and bootfile config item. This stuff then points them to my call manager for upgrades, menus and services (forwarding, voice mail, etc).
/brian chee University of Hawaii ICS Dept Advanced Network Computing Lab 1680 East West Road, POST rm 311 Honolulu, HI 96822 808-956-5797 voice, 808-956-5175 fax ----- Original Message ----- From: "Ray Strode" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, December 23, 2002 12:43 PM Subject: Re: [luau] dhcp-146-41 > > I noticed that, instead of the usual "localhost", the computer was > > designated, out of the blue, a name called "dhcp-146-41". It was > > subsequently concluded that this was the source of all the problems > > (including inability to install printer driver, etc.) > > > Not sure why it's causing so many problems, but I can explain a little > bit about how the process works on > redhat. > > First, the computer requests an ip from the dhcp server (called DHCP > request), then > dhcp server returns the computer's ip address and other network > information, including the dns server > (called DHCP ACK [ACK is for acknowledgment]). Some time during this > process the file > /etc/sysconfig/network gets sourced and certain environment variables > are set. > > If HOSTNAME is one of the environment variables to get set and it is set > to something other than > "" or "localhost", then the hostname of the system is set to $HOSTNAME. > > If HOSTNAME is not set, or it is set to "" or "localhost" then the > computer performs a reverse lookup on the ip > it was just given (by asking the dns server it was just told about). > Whatever results from this reverse lookup is the > hostname assigned to the system. If the reverse lookup fails, then the > hostname is set to localhost. > --Ray > > > _______________________________________________ > LUAU mailing list > [EMAIL PROTECTED] > http://videl.ics.hawaii.edu/mailman/listinfo/luau