P802.1CB – Frame Replication and Elimination for Reliability

The full title of this PAR is “Standard for Local and Metropolitan Area Networks-Frame Replication and Elimination for Reliability”.

This standard specifies procedures, managed objects and protocols for bridges and end stations that provide:

• Identification and replication of frames, for redundant transmission.
• Identification of duplicate frames.
• Elimination of duplicate frames.

There are no other 802-compatible solutions providing fault tolerance without failover. To achieve this, it is necessary to create and eliminate duplicate frames. This can be done in end stations and relay nodes (e.g., bridges or routers).

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