Date: Wed, 30 Dec 1998 20:09:33 -0500 From: Christian Kuhtz <ck@ns1.adsu.bellsouth.com> To: Gary Palmer <gpalmer@FreeBSD.ORG>, "Steven P. Donegan" <donegan@quick.net> Cc: Mike Smith <mike@smith.net.au>, Josh Tiefenbach <josh@ican.net>, The Hermit Hacker <scrappy@hub.org>, freebsd-current@FreeBSD.ORG Subject: Re: NOW/MOSIX/Beowulf Message-ID: <19981230200933.L828@ns1.adsu.bellsouth.com> In-Reply-To: <28977.915064476@gjp.erols.com>; from Gary Palmer on Wed, Dec 30, 1998 at 07:34:36PM -0500 References: <Pine.BSI.3.91.981230153706.24396A-100000@oldnews.quick.net> <28977.915064476@gjp.erols.com>
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On Wed, Dec 30, 1998 at 07:34:36PM -0500, Gary Palmer wrote:
> There are sometimes requirements in ISPs to support rapid updates of large
> numbers of users in a short period of time. So commit time, and also
> distribution time, become critical.
This is precisely what we were struggling with.
> I agree. MIS shops should love LDAP. I think there should be an alternative
> for ISPs, which is more tailored for their needs.
SPs need multimaster directories for one thing. They need highly sophisticated
convergence mechanisms. This is neccessary since network topologies do get
fragmented at times and when they come back together, I would like a warm quick
welcome thrashing instead of a lengthy, thrashing convergence.
Further, I need to be able to make changes from multiple places during these
fragementation times, because I have multiple Ops centers across a given area,
and when a CSR answers a call and needs to make a change to a customer profile,
they need to be able to make that change. Regardless of whether the network
is converged yet or not.
I need information to be available everywhere (if desired) in form of a local
copy. When you start thinking about keeping things like E911 info in a
directory, the thing MUST NOT go down. EVER. Multimaster helps.
The neat side effects are: You never need to back anything up, because
as long as one complete copy survives somewhere, it will always redistribute
itself automagically.
All in all, non-trivial, but solvable. Having the right software widget in
your hands helps.
Cheers,
Chris
--
Frisbeetarianism, n.:
The belief that when you die, your soul goes up on the roof and gets stuck.
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