IEEE 802.1H-1995

For the purpose of facilitating the interoperability of ISO/IEC 10038 MAC Bridges and end stations in bridged LANs comprising CSMA/CD networks containing a mixture of ISO/IEC 8802-3 and Ethernet end stations and other types of LANs, this Technical Report specifies extensions to the behavior of MAC Bridges. To this end this Technical Report a) Extends the Bridge service interface model to support multiple MAC services on a single LAN and to add a Bridge-Tunnel service interface. b) Defines the Selective Translation Algorithm used by a Bridge to convert between Ethernet and ISO/ IEC 8802 frame formats. c) Defines the protocols used by a Bridge to convey Ethernet frames across ISO/IEC 8802 LANs, the Bridge-Tunnel Encapsulation Protocol, and the RFC1042 Encapsulation Protocol. Additionally, for the purpose of avoiding future incompatibilities, this Technical Report provides guidelines for the development of nonstandard ISO/IEC 8802 protocols, with particular emphasis on conversion of existing Ethernet protocols and the behavior to be expected from a Bridge.

The following are the express goals of this Technical Report: a) Preservation of full interoperability between ISO/IEC 8802 LANs. b) Enhancement of interoperability between ISO/IEC 8802 LANs and nonstandard LANs (i.e., Ethernet). c) Encouragement of vendors to migrate to ISO/IEC 8802-based protocols. d) Preservation of existing interoperability mechanisms between ISO/IEC 8802 LANs and nonstandard LANs. e) Engendering the design of new ISO/IEC 8802 protocols, and the migration of existing Ethernet protocols, in a fashion that is compatible with Bridges and ISO/IEC 8802 end stations. The following is not a goal of this Technical Report: Providing communication between two end stations, with the same physical LAN protocol, which are otherwise not capable of communicating when attached to a single LAN.

New IEEE Standard - Inactive-Withdrawn. Administratively withdrawn January 2011. Extensions to the behavior of ISO/IEC 10038 (IEEE 802.1D) media access control (MAC) Bridges, in order to facilitate interoperability in bridged local area networks (LANs) comprising CSMA/CD networks interconnected with other types of LAN using MAC Bridges, where the CSMA/CD networks contain a mixture of ISO/IEC 8802-3 and Ethernet V2.0 end stations, are specified. Additionally, guidelines are provided for the development of nonstandard 802 protocols, with particular emphasis on conversion of existing Ethernet protocols and the behavior to be expected from a Bridge, for the purpose of avoiding future incompatibilities.