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Open Transport and MacTCP Information

What are Open Transport and MacTCP?

Open Transport (OT) is Apple's communications software for Ethernet access. It allows an on-campus Macintosh to become a full-fledged SUNet node with its own IP address. With OT in place you can use software such as Eudora to read and reply to electronic mail while you are simultaneously connected to the Internet via a newsreader such as NewsWatcher, or a world-wide-web browser such as Netscape Communicator. Or you can connect to multiple hosts and use data from each to prepare a document on your own computer.

MacTCP is an older version of Apple's communications software for Ethernet access. It is used for older Macintoshes, or for Macintoshes running less recent system software. Whenever possible, ITSS recommends you use Open Transport for Macintosh networking.

How do I know if I can use Open Transport?

Open Transport has been a standard part of the MacOS since system 7.6, although System 7.6 will not install OT unless you direct it to do so. System 8.x will automatically install Open Transport.

If your Macintosh isn't running Open Transport, e.g. System 7.5.2 or older, you'll need to upgrade your System software to at least 7.5.3 to use OT. If you're running System 7.5.3, you may switch between Classic Networking and Open Transport using the "System Software Selector" found in the "Apple Extras" folder on your hard disk.

System 7.5.2 and below are compatible with MacTCP only.

To determine which version of system software your Macintosh is running select "About this Computer" (or "About this Macintosh") from the Apple menu towards the top left corner of the screen.

How do I Get Open Transport or MacTCP?

The easiest way to get OT is to upgrade your system software to 7.6 or higher because OT is part of the system installation. If you are not ready to upgrade to 7.6 or higher but you are running 7.5.3 or higher, you can find the Open Transport installer software, in the MacStanford collection of software.

If you are already running System 7.6 or later, the OT software was installed as part of that installation. Mac OS software (including System 8.1) that is licensed to Stanford is available at the ITSS MacOS Web site.

Please note that there are two versions of Open Transport: Open Transport for Ethernet networking and Open Transport for PPP (OT/PPP) for modem connections. For Ethernet connections, be sure to choose the "Open Transport" installer.

The MacStanford software programs are available from several sources:

1) Online distribution of all software and documentation via the MacStanford Web site. You will need your SUNet ID and password in order to download these materials. Mac OS software (including System 8.1) that is licensed to Stanford is also available there.

2) A package including MacStanford software on CD-ROM including paper copies of documentation is available for $5 from Networking Systems, 115 Pine Hall.

3) Your Local Network Administrator has a copy of the CD and may provide assistance for other means of installation (such as from floppies or a ZIP drive).


I already have the software...
How do I connect to ethernet?

Instructions for connecting to the ethernet network.


Last Updated: Monday, December 21, 1998