OK, let me see if I understand all this.
On Jan 26, 2005, at 13:43, Clark Martin wrote:
At 12:18 PM -0500 1/26/05, [EMAIL PROTECTED] wrote:At 09:31 AM +0100 01/26/2005, Are Hansen wrote:Thanx for the info, Dan. What you say about AppleTalk and EtherTalk seems a bit strange though; if I turn off AppleTalk in System Preferences, I can still use Connect to... from Finder: how come?
hum. Ok. Lemme back up a bit. :)
AFP *is* an AppleTalk/AppleShare protocol. Its routines reside within shared libraries, so they're accessable at any time. At issue is how you access which underlying network layer (stack).
AFP is AppleShare. It can use AppleTalk or IP but the two are independent of each other.
Old school, the following was true (if I understand correctly) - LocalTalk = AppleTalk over serial - EtherTalk = AppleTalk over Ethernet - TokenTalk = AppleTalk over Token Ring
So then, does AppleTalk now just mean "AFP"?
AFP over EtherTalk requires that AppleTalk be "turned on".
AFP over IP requires that TCP/IP be "turned on".
The system sniffs which stack to use by your input, an AT name vs an IP addr.
Once you select a server with AppleTalk it will attempt to connect to the server via IP if it can. If the server isn't serving on IP then it simply uses AppleTalk. If the server reports it is using IP then the client will attempt accessing the server via IP. If it can't be reached there will be a delay while it attempts it. If it can't connect via IP it reverts to AppleTalk. This can happen if the two computers are connected by AppleTalk but not IP (such as using LocalTalk without MacIP or one is using dial up instead of Ethernet for IP).
But AFP is not using AppleTalk over IP.
So, hmm... what exactly does that "AppleTalk" checkbox in the OS X Network preference panel do anyway? Is that to turn on AppleTalk over the selected network interface?
If that isn't enabled, how does my System 7 client connect? I have noticed that with the AppleTalk box checked, System 7's Chooser sees my OS X box, and can connect to it without me having to specify the IP address. But with the AppleTalk box UNCHECKED, I find that I can still connect, but that System 7 doesn't see my box directly - I have to specify the IP address.
I know a lot about Unix, TCP/IP, and networking in general, but not as much about the AppleTalk protocol suite in specifics. I have found a couple pages that give some details, but they don't give them all:
http://www.mac512.com/appletal.htm
http://www.mandrake.demon.co.uk/Apple/ltalk/
http://www.javvin.com/protocolAppleTalk.html
Thanks.
Eagle
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