merlin@csvax.seas.smu.edu (David Hayes) (04/12/90)
In article <362@jove.dec.com> mogul@decwrl.dec.com (Jeffrey Mogul) writes: >Since I wrote RFC922, I've had a change of heart; I agree that multi- >subnet broadcasts are a bad idea. I've heard from some people that >RFC1009 can be read to require their support, and also to require that >if supported that one can configure them to be blocked; my reading of >RFC1009 is that gateways are not required to support them. At any rate, >this is clearly an issue for the Router Requirements Working Group, and >I hope that they rectify my error. I'm working on a printer accounting program that runs throughout our (subnetted) campus network. It uses a client-server architecture. There are multiple, redundant servers. I wanted our system to be able to find the servers by broadcast, but our cisco router doesn't forward them. That's at least one application for which multi-subnet broadcast was the correct solution. I don't think Jeff made a mistake originally. While any broadcast should be used sparingly, totally prohibiting multi-subnet broadcasts needlessly deprives us of a clean solution to my class of problem. David Hayes School of Engineering Southern Methodist University merlin@smu.edu uunet!smu!merlin "Here's a test to see if your job here on Earth is finished: If you're still here, it isn't." -- Richard Bach, _Illusions_
mogul@decwrl.dec.com (Jeffrey Mogul) (04/13/90)
In article <16240@smunews.UUCP> merlin@csvax.seas.smu.edu (David Hayes) writes: >In article <362@jove.dec.com> mogul@decwrl.dec.com (Jeffrey Mogul) >writes: >>Since I wrote RFC922, I've had a change of heart; I agree that multi- >>subnet broadcasts are a bad idea. > >I'm working on a printer accounting program that runs throughout >our (subnetted) campus network. It uses a client-server >architecture. There are multiple, redundant servers. I wanted >our system to be able to find the servers by broadcast [...] Well, I'm still against multi-subnet broadcasts; you should lean on your vendors to support the Internet Group Multicast Protocol (RFC1112).
escher@Apple.COM (Michael Crawford) (04/14/90)
In article <379@jove.dec.com> mogul@decwrl.dec.com (Jeffrey Mogul) writes: >In article <16240@smunews.UUCP> merlin@csvax.seas.smu.edu (David Hayes) writes: >> >>I'm working on a printer accounting program that runs throughout >>our (subnetted) campus network. It uses a client-server >>architecture. There are multiple, redundant servers. I wanted >>our system to be able to find the servers by broadcast [...] Perhaps you could have the print servers register themselves with the name server somehow, and then query the name server. -- Michael D. Crawford Oddball Enterprises 606 Modesto Avenue Santa Cruz, CA 95060 oddball!mike@ucscc.ucsc.edu Consulting for Apple Computer Inc. escher@apple.com Applelink: escher@apple.com@INTERNET# The opinions expressed here are solely my own.