Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 1BR: Virtual bridged local area networks - Bridge port extension

This standard specifies the devices, protocols, procedures, and managed objects necessary to extend a bridge and its management beyond its physical enclosure using IEEE 802 LAN technologies.

To this end, it

- Identifies and isolates traffic between ports within an Extended Bridge;

- Specifies a tag format for this identification;

- Establishes an Extended Bridge consisting of a Controlling Bridge and one or more Bridge Port Extenders;

- Specifies the functionality and the specific requirements of a Bridge Port Extender;

- Extends the MAC service of a Bridge Port across the interconnected Bridge Port Extenders, including support of Customer Virtual Local Area Networks (C-VLANs).

- Establishes the requirements of bridge components and systems for the attachment of Bridge Port Extenders;

- Specifies a protocol to provide for the configuration and monitoring of Bridge Port Extenders by a Controlling Bridge; and

- Establishes the requirements for Bridge Management to support Port Extension, identifying the managed objects and defining the management operations