Re: bootp

1998-08-11 15:56:46
Subject: Re: bootp
From: "David A. Kuzminski" <kuzminsk AT MORDOR.UNCH.UNC DOT EDU>
To: nv-l AT lists.tivoli DOT com
Date: Tue, 11 Aug 1998 15:56:46 -0400
> From: Daniel Casey <jistdc1 AT FIREMAIL.JBHUNT DOT COM>
> Subject: bootp
> To: NV-L AT UCSBVM.ucsb DOT edu
> Content-Length: 1267
> Status: RO
> OS = AIX 4.2.1
> Nways Manager = 1.2
> Anyone out there familiar with bootp?  One of our networking guys
> says that there is a router that can't get a bootp request
> established to download it's config.
> However, we are able to commuicate from the hub to the server, we
> tested tftp from the hub and that worked, so I can talk with the
> machine.  He even put a sniffer on the ring and he could see the
> request leaving the hub, but nothing came back from the server.
> I read the man page on bootp and it said that if the following
> line in the inetd.conf file was commented out and you did a
> refresh -s inetd it would be ready to listen, so I did it.
> bootps  dgram   udp     wait    root    /usr/sbin/bootpd       bootpd
> /etc/bootp
> tab
> And the following is setup in /etc/services:
> bootps          67/udp                          # bootp server port
> bootpc          68/udp                          # bootp client port
> Still didn't work.  I did notice the following process running:
>  root  4572  4310   0   Jul 22      - 37:12 bootpd /etc/bootptab
> Should this guy be running all the time?  The man page seemed to
> indicate that the bootpd subserver should only be running when
> it's being contacted by server, router, hub, whatever.
> Thanks,
> Daniel
> jistdc1 AT mail.jbhunt DOT com

Hmmm.  I'm not sure why the router is doing a BOOTP request, but
laying that aside, you have to do more than turn the daemon on to 
get BOOTP to work.  When a BOOTP client comes up and does a request
for an IP address, the BOOTP server looks in its config file, usually
/etc/bootptab, for the MAC address of the client.  If it finds the
address there, it returns the associated IP address - otherwise the
server does nothing.  Look at the man pages for bootptab for config
information.  You might also want to check out DHCP rather than 
BOOTP if your router can use it.

David Kuzminski
UNIX System Administrator
Information Services Division
University of North Carolina Hospitals
Carr Mill Mall
200 North Greensboro Street
Carrboro, NC 27510

Phone (919) 966-2328
Fax   (919) 966-2110
email kuzminsk AT .unch.unc DOT edu

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