Path: utzoo!attcan!uunet!lll-winken!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!ucbvax!EAGLE.WESLEYAN.EDU!RSILVERMAN From: RSILVERMAN@EAGLE.WESLEYAN.EDU (Richard Silverman) Newsgroups: comp.protocols.appletalk Subject: Re: Re-assigning node numbers? Message-ID: Date: 21 Jan 89 02:46:32 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 19 X-Unparsable-Date: 20-JAN-1989 20:52:22.32 Scanner, When the Mac boots, it attempts to open the ATP drivers. If it's connected to an AppleTalk network, it will pick a node number and use a LAP control packet to determine whether it is unique (other nodes will respond if it is not). It then stores that node ID in parameter RAM, and uses it as the first node ID to try the next time the drivers open. This way, node IDs tend to remain stable. The only way it should change while it's still on is if the ATP drivers are closed and then reopened, and in the mean time someone else (presumable a device brand new to this network) has been connected and claimed that ID -- unlikely situation. Of course, if you have a device that's misbehaving by not reusing it's old node ID, or perhaps not obeying the LAP control protocol, then you could have problems. Richard Silverman arpa: rsilverman@eagle.wesleyan.edu Wesleyan University bitnet: rsilverman@wesleyan Middletown, CT CIS: [72727,453] 06457