Standard: ITU Y.1731

Applies across the entire Ethernet network

Primary Tools for Fault Management and Performance Monitoring

ITU Y.1731 incorporates three important tools that allow the notification and segmentation of network failures.

These tools can be used by all of the owners (service providers, carriers and users) of the network to monitor and maintain their responsibility areas or Maintenance Entities (Domains in 802.1ag).

Maintenance Entities may be nested by responsible party provided that a lower MD be completely within the one above (see diagram below).