OA&M
From Wikipedia, the free encyclopedia
OA&M (operations, administration, and maintenance) is a general term used to describe the processes, activities, tools, standards, etc involved with operating, administering, and maintaining any system. More commonly used in the context of computer networks or computer hardware.
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[edit] Network Standards
- Fault management and performance monitoring (ITU-T Y.1731[1]) - Defines performance monitoring measurements such as frame loss ratio, frame delay and frame delay variation to assist with SLA assurance and capacity planning. For fault management the standard defines continuity checks, loopbacks, link trace and alarm suppression (AIS, RDI) for effective fault detection, verification, isolation and notification in carrier networks.
- Connectivity fault management (IEEE 802.1ag[2]) - Defines standardized continuity checks, loopbacks and link trace for fault management capabilities in enterprise and carrier networks. This standard also partitions the network into 8 hierarchical administrative domains.
- Developments in Ethernet OAM - Link layer discovery (IEEE 802.1ab) - Defines discovery for all PEs supporting a common service instance and/or discovery for all devices (PE and P) common to a single network domain.
- Ethernet in the first mile (IEEE 802.3ah[3]) - Defines mechanisms for monitoring and troubleshooting Ethernet access links. Specifically it defines tools for discovery, remote failure indication remote and local loopbacks and status and performance monitoring.
- Ethernet protection switching (ITU G.8031) - Brings SONET APS / SDH MSP like protection switching to Ethernet trunks.
