This appendix describes how to install NetWare for Macintosh on an internet that includes one or more AppleTalk Phase 1 routers.
If you don't know whether the internet at your site supports an AppleTalk Phase 1 router, check the network records. Phase 1 routers typically predate the introduction of AppleTalk Phase 2 and have not been upgraded to support Phase 2. You can connect Phase 1 routers only to nonextended networks (EtherTalk 1.0, ARCnet, or LocalTalk) because Phase 1 does not support extended networks. However, the fact that there are nonextended networks on an internet does not imply that a Phase 1 router is present.
If the internet supports Phase 1 routers and you wish to keep them installed and configured as Phase 1 routers (rather than upgrade them to Phase 2), you must configure all Phase 2 routers on the entire internet in Transition Mode.
When you configure an AppleTalk router in Transition Mode, the Phase 2 router modifies its behavior to operate with a Phase 1 router on the internet.