Mac OS 8.5 Technote: Part LXXIII

Copyright 1998 by Apple Computer, Inc. All Rights Reserved.

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System Extensions (Continued)

Open Transport 2.0.1

Open Transport is the networking technology for Mac OS 8.5. Open Transport 2.0.1 contains SNMP and OT SNMP Admin, DHCP enhancements for improved compatibility with Windows NT, including Client ID, new APIs for manipulating configurations, scriptability for AppleTalk, TCP, Modem, Remote Access, Infrared control panels, and bug fixes.
  • The Dynamic Host Configuration Protocol (DHCP) implementation now supports a number of much-requested features, including Client Identification, retention of the lease on a given IP address across boots, better user feedback in the event that the DHCP server is unavailable, and better support of RFC 2131. Many of these changes address customer concerns about OT's DHCP compatibility with Windows NT DHCP servers.

  • Support for the Simple Network Management Protocol (SNMP) is available for Open Transport. Support for the version 2 Management Information Base (MIB II), instrumentation for AppleTalk and TCP/IP protocols and transports, administrative tools, and system agent support for the PCI bus will be provided.

  • Minor changes to Open Transport support for Apple Remote Access to allow feature requests such as support for MS-CHAP Authentication support and RFC 1877 to automatically negotiate DNS address with a server. These changes address customer concerns about OT's compatibility with Windows NT PPP servers.

  • If Open Transport TCP/IP is configured to use DHCP and it receives no response from any DHCP server within 30 seconds, it will dynamically assign a temporary address in the local non-routable self-assignment range (169.254.x.x) and operate using this address until a DHCP server becomes available. This allows hosts on the same Ethernet to communicate with each other using IP (for example, to allow high-performance TCP/IP access to an AppleShare IP server) even if no connection to the Internet is available.

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