Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!mcsun!hp4nl!alchemy!edwin
From: edwin@cs.ruu.nl (Edwin Kremer)
Newsgroups: comp.sys.hp
Subject: Re: Booting Discless Machines thru Routers
Keywords: discless router
Message-ID: <1991May03.074909.258@cs.ruu.nl>
Date: 3 May 91 07:49:09 GMT
References: <9937@plains.NoDak.edu>
Organization: Utrecht University, Dept. of Computer Science
Lines: 26

In <9937@plains.NoDak.edu> lodin@plains.NoDak.edu (Steve Lodin) writes:

   | In the near future, our networking will be dividing our physical
   | backbone into several smaller segments using Cisco routers.
   | This will isolate some of my discless machines (HP 9000/340s)
   | from their server.

Those poor 340's.... ;-) You definitely have a problem here.

  The diskless boot request of a cnode (``help, I want my UNIX'') is simply
an Ethernet broadcast and therefore not routable. This implies that the
server and its cnodes must be on the same subnet.
  The server has a daemon running (rbootd) who maps Ethernet addresses
to hostnames via /etc/clusterconf. During bootup, the IP address is map
via /etc/hosts, using the hostname (from /etc/clusterconf, remember?).

Manual pages that might interest you are clusterconf(4) and rbootd(1m).


			hope this helps,
						--[ Edwin ]--
-- 
Edwin Kremer (SysAdm), Dept. of Computer Science, Utrecht University
Padualaan 14,   P.O. Box 80.089,  3508 TB  Utrecht,  The Netherlands
Telephone: +31-30-534104  | UUCP: ...!uunet!mcsun!hp4nl!ruuinf!edwin
Telefax  : +31-30-513791  | Email: edwin@cs.ruu.nl    [131.211.80.5]