At 10:30 PM -0400 8/6/2003, Brian wrote:
I have a TCP/IP network of macs and PCs and a laserwriter 16/600. Will I not be able to talk mac-mac >over the network with the 814 ? I can never remember what Appletalk/ethertalk/appleshare >differences are.

Appletalk- a custom Apple protocol for use over serial
Ethertalk- a custom Apple protocol over ethernet This requires special support on the part of routers etc. for it to get to its destination.


AppleTalk is the overall Apple network protocol. It includes EtherTalk, LocalTalk, TokenTalk, Remote access. A long time ago LocalTalk (which uses the serial port) was called AppleTalk but this was at a time when that was all there was to Apple Networking.


AppleshareIP- another Apple protocol but based on regular internet packets, so it gets routed over regular hubs and switches like internet traffic (no support for custom stuff needed other than a server that can decipher it).


Every protocol a router handles needs it's particular support. IP isn't the one true protocol over Ethernet. IP, AppleTalk, DecNET, Novell, Banyan, NetBUI are all network protocols that can use Ethernet. Some are routable, some aren't.


Look in OS what, 8.5? chooser (I forget when it got started, someone can correct me (please!). Click on Appleshare, then you have a button for "server IP address"- provide an IP, and the Mac will try and connect to an AppleshareIP Server (the last protocol above) over your internet connection. Nice for remote access. Different from regular ethertalk.


OS 8.0 introduced ASIP client support but it can be added to earlier versions by installing a newer AS client.

One thing to watch out for in using Chooser to pick an AppleShare server from the list. The list shows servers that show up on the AppleTalk network. Selecting one will cause the client software to communicate with the server and get it's IP address. The client will then try to connect via IP. If it cannot it will eventually time out and fall back to AppleTalk. I have seen it do this in certain circumstances where the two machines are connected via AppleTalk but not IP even though both machines have IP addresses. A common case is if one machine is set to use DHCP but there is no DHCP server. It takes a default value in the 169.x.x.x range. Both machines are networked together on IP but because one machine has a bogus IP address the two still cannot talk. Makes for an annoying delay. But it does detect bad IP assignments.


Your laserwriter 16/600- I don't know Apple laser models very well but suspect that it only knows about "ethertalk".


It's EtherTalk or LocalTalk.


Connecting to your other macs- like I said, if you bought AppleshareIP Server for one of them then it would be able act as a server that clients (like the chooser on another mac) can connect to, via the Server
IP address field in their Chooser. I could be wrong but unless they bundled something into the OS when I was not looking, there is only native CLIENT support for AppleshareIP, you can't be a AppleshareIP-capable server without buying something extra. But it would be nice to be corrected. It's a proprietary Apple thing so I don't expect Stairways Software or anyone to offer a 3rd party solution. Again I'd be happy to be corrected, I've not followed this stuff much since about OS 8.5.


OS 9.0 introduced ASIP server support in FileSharing. Apple purchased the software that someone else had written to do it.


And while you would THINK that ethertalk would work at least on the wired side as someone else mentioned, since many routers have a switch on the wired side,but quite a few didn't pass ethertalk packets- at least when I was getting my (wired) router about 2 years ago- it took a little research to get one that supported it.


If it's a switch then it better pass EtherTalk, switches operate at a level below EtherTalk, in other words they don't know the packet is IP, EtherTalk etc, they just know it's an Ethernet packet.

--
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting

"I'm a designated driver on the Information Super Highway"

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