IEEE 802.5 Documents

Note: Links marked with will require a username and password to access.

Working Group Standalone Documents

• a committee mission statement
• committee membership list,
• committee voter and observer information
• a master list for meeting documents
• editorship rules and
• a list of outstanding maintenance work to be carried out by the committee.

Published Standards

8802-5 : 1998 (ISO/IEC) [ANSI/IEEE 802.5, 1998 Edition]

Information technology--Telecommunications and information exchange between systems--Local and metropolitan area networks--Specific requirements--
Part 5: Token ring access method and physical layer
• Standard details.
• Order from here.

802.5c-1991 (R1997) Supplement to IEEE Std 802.5-1989

Recommended Practice for Dual Ring Operation with Wrapback Reconfiguration (ANSI)
• Standard details.
• Order from here.

TR 11802-4 : 1994 (ISO/IEC) [ANSI/IEEE Std 802.5j-1993]

Supplement to ISO/IEC 8802-5 : 1992, Fibre optic station attachment (ISO/IEC Technical Report Type 2)
• Standard details.
• Order from here.

802.5:1998 / Amendment 1.:1998 Dedicated Token Ring Operation and Fibre Optic Media

This document contains IEEE Stds. 802.5r-1997 and 802.5j-1997 (both approved on September 16th, 1997. DTR is a mode of operation of token ring equipment on dedicated (i.e., point-to-point) links. It defines DTR Concentrators and DTR Stations. DTR Concentrators have C-Ports which have two modes of operation: Port mode, and Station emulation mode. Both DTR Concentrators and DTR Stations may support two access methods: token-passing (TKP) and transmit-immediate (TXI). The full power of DTR is seen on links operating with the TXI access protocol, because this protocol allows the link to carry data at full speed in both directions at once (full-duplex operation).

• Standard details.
• Order from here.

Archive Material

802.5 Physical layer tutorial material

Jim Carlo has collected thephysical layer papers which have been presented to the 802.5 committee over the years. These papers represent a huge volume of expertise in the arcane field of token ring physical layer design.

Working Groups

P802.5t 100 Mbit/s Dedicated Token Ring

Project scope: Generate a standard for 100 Mbit/s 802.5 Token Ring LANs with MACs based on the present 802.5 Token Ring MAC. It will support 2-pair Category 5 (100 ohm) and STP (150 ohm) cabling based on the 802.3 100BASE-TX PHY and support transmission over optical fibre based on using the 100BASE-X PHY and the FDDI fibre PMD. The standard will consist of specifications for both stations and ports. The Media Access Control (MAX) will operate a dedicated Token Ring link, using the Transmit Immediate (TXI) Access Protocol as defined for 4/16 Mbit/s Token Ring operation with minimal modifications to support operation with the IEEE 802.3 100 Mbit/s Phyisical Layer (100BASE-X PHY). The Token Ring management objects defined for 4/16 Mbit/s operation will continue to be used for 100 Mbit/s operation. The frame format between MAC and LLC will be preserved.

• Project Approval Request
• IEEE Standards Status Report on P802.5t
• Working group documents.

P802.5v Gigabit Token Ring

Project scope: Define IEEE 802.5 Token Ring (MAC) parameters and minimal augmentation of its operation, physical layer characteristics, and management parameters for transfer of 802.5 format frames at 1,000 Mb/s or faster. The standard will consist of specifications for both stations and ports. MAC frame format will be based on that defined for IEEE 802.5. The frame format between MAC and LLC is being preserved

• Project Approval Request
• IEEE Standards Status Report on P802.5v
• Working group documents.

P802.5w Errata to 802.5:1998 and Amd.1:1998

Project scope: Correct errors in 802.5 and its amendments.

• Project Approval Request
• IEEE Standards Status Report on P802.5w
• Working group documents.

P802.5x Supplement to 802.1Q: Virtual Bridged LANs: Source Routing

Scope: Specify extensions to 802.1Q to enhance support for the source route bridging method.

• Project Approval Request
• IEEE Standards Status Report on P802.5x
• Working group documents.

P802.5rev Token Ring standard revision

Scope: Unification of the token ring standards and supplements with clarification and corrections.

• Project Approval Request
• IEEE Standards Status Report on P802.5
• Working group documents.

P802.5z Aggregation of Multiple Link Segments

Scope: Specify a DTE to DTE logical link which consists of n parallel instances of an 802.5 point-to-point link segment. The logical link will support existing 802.5 MAC clients.

• Project Approval Request
• IEEE Standards Status Report on P802.5z
• Working group documents.

P802.5?? Enhanced Source Routing

Scope: The source route bridging method [802.1d] will be enhanced to provide additional resilience and may be enhanced to provide additional load sharing capabilities.

• Project Approval Request