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- From: harvey@indyvax.iupui.edu
- Newsgroups: comp.protocols.tcp-ip
- Subject: Re: PCS WITH DUPLICATE TCP ADDRESSES
- Message-ID: <1992Dec23.125917.198@indyvax.iupui.edu>
- Date: 23 Dec 92 12:59:17 -0500
- References: <1992Dec19.000209.1@kean.ucs.mun.ca> <1992Dec19.135454.548@fallst> <1992Dec20.094107.1@kean.ucs.mun.ca> <1992Dec22.191907.23824@mmm.serc.3m.com>
- Organization: Indiana University-Purdue University at Indianapolis
- Lines: 31
-
- In article <1992Dec22.191907.23824@mmm.serc.3m.com>, ccg@tcdsp1.mmm.com ("Charles Ganzhorn") writes:
- > BOOTP is major bad idea. You have to configure your routers to pass the
- > silly stuff 'cuz you won't necessarily have a load host in all subnets.
- > This means you lose the usual isolation that IP provides you between
- > subnets (BOOTP uses a global IP broadcast).
-
- Well, the routers we use (Ciscos) can be configured to forward global IP
- broadcasts for specific IP protocols to specified sets of "helper" addresses.
- This way you can have redundant BOOTP servers without "losing isolation."
-
- Before using BOOTP you should certainly understand how this will affect points
- of potential failure for the clients. For example, is it acceptable for
- workstation X to be unbootable or have IP disabled when router Y is down?
-
- > Also, if your BOOTP logs all requests, a station whose download doesn't
- > get satisfied typically requests every five seconds and ends up filling
- > up the logs on systems.
-
- Whoever wrote the client code should have have spared a few more instructions
- in the boot code and made it back off exponentially to some upper limit on the
- retry interval. This isn't a failure of BOOTP, but a poorly designed client...
-
- BOOTP is useful for other things besides loading a boot image. You can use
- it just to provide IP address, netmask, default router, default DNS servers,
- and other servers, i.e., all the IP-related things that you have to configure
- for individual workstations.
-
- Used correctly, BOOTP can reduce workstation configuration headaches.
- --
- James Harvey IUPUI OIT Technical Support/Networks
- harvey@iupui.edu harvey@indiana.edu uucp:iugate!harvey bitnet:harvey@indyvax
-