[245] in Resnet-Forum
Re: Bootp
daemon@ATHENA.MIT.EDU (Roger Gulbranson)
Mon Apr 18 09:51:17 1994
Date: Mon, 18 Apr 1994 08:29:32 -0500
To: paul@atlas.abccomp.oz.au, resnet-forum@MIT.EDU
From: Roger.L.Gulbranson.1@nd.edu (Roger Gulbranson)
At 10:12 AM 4/18/94 -0500, paul@atlas.abccomp.oz.au wrote:
>We sell a commercial RARP server which allocates addresses on the fly -
>BOOTP will be done as soon as I can convince the boss it'll fly!
>
>We recover addresses bvy actively ARPing each allocated address, at some
>user-controlled rate (usually around one ARP per second, so each machine
>gets tested every couple of minutes or so). If a machine does not answer
>5 consecutive ARPs, the address is considered available for re-allocation.
>We also ARP addresses that shouldn't be allocated, to see if someone is using
>addresses in the RARP servers range without permission, and flag possible
>duplicate hardware/IP combinations in various flavours. Some sites have used
>it just to check they don;t have any duplicated manually-assigned addresses,
>wiothout using the allocation feature at all!
>
>I expect BOOTP could work the same - only an ARP would be required, not a full
>ICMP PING, which would double the traffic for most cache sizes (as the initial
>ARP would probably be required anyhow, and if it responds to the ARP...!)
How do you deal with systems, PCs in particular, that only respond while
they have an active application running?
---
Roger L. Gulbranson, Ph.D.
Director, Networking Services
Office of University Computing, Brownson 211
University of Notre Dame
Notre Dame, IN 46556
Phone: 219-631-7248
FAX: 219-631-8201
Email: Roger.L.Gulbranson.1@nd.edu
There can be only one - Highlander, Twentieth Century Fox, 1986
