On Nov 2, 13:59, Lawrence LeMay wrote: [...] Thanks, Lawrence. I've had a quick look at the URL you posted in your followup, and it seems to me that unless Arno's printer (plotter? I can't remember either) is bust, that procedure is what he needs. I was about to reply to Arno's post, and was thinking about (R)ARP while having my dinner. It's a bit odd the way it says to "make an entry in the ARP table" because that's NOT what you do, exactly. The ARP table on a host has nothing to do with providing responses to other things that need information in order to boot, it's just used to map MAC addresses (Ethernet addresses, typically) to IP addresses when talking to other hosts known by IP address. But I'm sure it's just a case of Calcomp getting the terminolgy slightly wrong. What it obviously (to me!) means is to set up a host on the same subnet (actually in the same collision domain) which will respond to a RARP request. The way you do *that* on a Unix host is to make an entry in /etc/ethers, containing a line with the hostname that matches the MAC address you want to provide the IP address to. Then you also need an entry in the /etc/hosts file, to map the hostname to the IP address. Finally, make sure the rarpd daemon is running. Usually it will be started by a line in one of the startup files in /etc/rc.local, /etc/rc.net, /etc/rc.2 or similar place (it's in the /etc/init.d/network script in SysV UNIX). For Arno, this means: create /etc/ethers if it doesn't exist append a line with printer name and MAC (Ethernet) address /etc/hosts must already exist for the Sun to work, so append a line for the printer start up rarpd if it's not already running (the order in which you do these shouldn't matter) If we call the printer "calcomp", the line in /etc/ethers is: 00:C0:E2:00:0C:8E calcomp and the line in /etc/hosts is 111.1.0.1 calcomp and the command to start rarpd is probably /usr/etc/rarpd or /sbin/rarpd possibly followed by '-l' and the name of a logfile in which to record what it does, and/or the name of the interface on which to listen (le0, for Arno's Sun). -- Pete Peter Turnbull Network Manager University of York