Subject: Re: [netatalk-admins] routing problem
From: Bill Studenmund (skippy@macro.stanford.edu)
Date: Tue Jul 29 1997 - 18:42:29 EDT
On Fri, 25 Jul 1997, Miles Nordin wrote:
> Second, there is one more thing you need to know that he didn't tell you.
> There is an ordedr this has to be done in.
>
> 1. Shut off _every_ mac on all four subnets. NO EXCEPTIONS. maybe use
> nbplkup starting atalkd one net at a time to ensure this.
> 2. Start atalkd on the FreeBSD machine with Bill's suggested atalkd.conf
> 3. Restart all the Mac's.
>
> Mac's only choose their node address once at boot. If there is no router
> on the subnet, they will choose the zoneless nets above 65280. If there
> is a router, they will choose an address that falls in the acceptable
> range indicated by the router. but, you cannot start a -seed router if:
>
> a. there is another seed router on the subnet, or
> b. there is a Mac on the subnet powered on that did not boot under
> the controlling influence of the seed router you are trying to
> bring up.
(sorry for the delay; I've been moving across town)
I looked into it more, and you're kinda right. If there's no router around
when a mac boots, it will pick an address in the routerless nets above
65280. If a router later shows up, it won't change its address. Inside
Appletalk v2 even says so. :-)
I don't think that'll mess up the router's booting with -seed, though, as
atalkd listens for other routers on the wire. Normal mac clients shouldn't
respond, so there won't be a problem. Please let me know if that's wrong.
Also, I don't think you have to have the macs off before booting the
server/router. You just have to restart them after the router comes up
before they will do appletalk correctly. Also, you only have to restart
the macs if they booted with the router off, or with the router in a
different configuration. So if the router just goes down, you can restart
it in the same configuration, and the macs are fine.
The latter's why I've never run into the problem. Our FastPaths are never
down for long, and the net number has been in place for about 7 or 8
years. :-)
Take care,
Bill
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