IEEE 802.1s-2002

IEEE 802.1s-2002 IEEE Standards for Local and Metropolitan Area Networks - Amendment to 802.1Q Virtual Bridged Local Area Networks: Multiple Spanning Trees
Amendment by IEEE, 12/31/2002

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Full Description

Scope

To develop an architecture and protocols for the use of multiple instances of the Spanning Tree Protocol (-1-) within a network employing VLANs (-2-). The architecture and protocols will be compatible and interoperable with existing Virtual Bridged Local Area Network equipment and will support a range of implemenntations.

Purpose

802.1Q Virtual LANs provides the equivalent of separate LANs over a single bridged LAN, using a single instance of the Spanning Tree Protocol. Despite multiple independent implementations employing multiple instances of the Spanning Tree Protocol, there is currently no interoperability between different vendors, nor a coherent management framework for different techniques. This standard will provide an architecture, protocols, and mappings for bridges to provide that interoperability and consistent management.