OA&M
Encyclopedia
Operations, administration and management or operations, administration and maintenance (OA&M or OAM) is a general term used to describe the processes, activities, tools, standards, etc involved with operating, administering, managing and maintaining any system. It is more commonly used in the context of computer network
s or computer hardware
.
In particular, Ethernet operations, administration and maintenance (EOAM) refers to protocols for installing, monitoring, and troubleshooting Ethernet
metropolitan area network
(MANs) and Ethernet WAN
s. It relies on a new, optional sublayer in the data link layer of the Open Systems Interconnection
(OSI) model. The OAM features covered by this protocol are discovery, link monitoring, remote fault detection, remote loopback
.
Computer network
A computer network, often simply referred to as a network, is a collection of hardware components and computers interconnected by communication channels that allow sharing of resources and information....
s or computer hardware
Computer hardware
Personal computer hardware are component devices which are typically installed into or peripheral to a computer case to create a personal computer upon which system software is installed including a firmware interface such as a BIOS and an operating system which supports application software that...
.
In particular, Ethernet operations, administration and maintenance (EOAM) refers to protocols for installing, monitoring, and troubleshooting Ethernet
Ethernet
Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....
metropolitan area network
Metropolitan area network
A metropolitan area network is a computer network that usually spans a city or a large campus. A MAN usually interconnects a number of local area networks using a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks and the...
(MANs) and Ethernet WAN
WAN
WAN may refer to:* Wide area network * World Association of Newspapers* Wanborough railway station in England, which has the station code WAN...
s. It relies on a new, optional sublayer in the data link layer of the Open Systems Interconnection
Open Systems Interconnection
Open Systems Interconnection is an effort to standardize networking that was started in 1977 by the International Organization for Standardization , along with the ITU-T.-History:...
(OSI) model. The OAM features covered by this protocol are discovery, link monitoring, remote fault detection, remote loopback
Loopback
Loopback describes ways of routing electronic signals, digital data streams, or flows of items from their originating facility back to the source without intentional processing or modification...
.
Standards
- Fault management and performance monitoring (ITU-T Y.1731) - 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 managementFault managementIn network management, fault management is the set of functions that detect, isolate, and correct malfunctions in a telecommunications network, compensate for environmental changes, and include maintaining and examining error logs, accepting and acting on error detection notifications, tracing and...
the standard defines continuity checks, loopbackLoopbackLoopback describes ways of routing electronic signals, digital data streams, or flows of items from their originating facility back to the source without intentional processing or modification...
s, link trace and alarm suppression (AIS, RDI) for effective fault detection, verification, isolation and notification in carrier networks.
- Connectivity fault management (IEEE 802.1ag) - 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.
- Link layer discovery (IEEE 802.1ab) - Defines discovery for all Provider Edges (PEs) supporting a common service instance and/or discovery for all edge devices and P RouterP RouterIn Multi-Protocol Label Switching , a P Router or Provider Router is a Label Switch Router that functions as a transit router of the core network. The P Router typically connected to one or more PE Routers....
s) common to a single network domain.
- Ethernet in the First MileEthernet in the First MileEthernet in the first mile refers to using one of the Ethernet family of computer network protocols between a telecommunications company and a customer's premise. From the customer's point of view it is their "first" mile, although from the access networks' point of view it is known as the "last...
defined in IEEE 802.3ah 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 SONETSynchronous optical networkingSynchronous Optical Networking and Synchronous Digital Hierarchy are standardized multiplexing protocols that transfer multiple digital bit streams over optical fiber using lasers or highly coherent light from light-emitting diodes . At low transmission rates data can also be transferred via an...
APS / SDH MSP like protection switching to Ethernet trunks.
- Ethernet Operations, Administration, and Maintenance (EOAM) is a protocol for installing, monitoring, and troubleshooting EthernetEthernetEthernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....
metropolitan area networkMetropolitan area networkA metropolitan area network is a computer network that usually spans a city or a large campus. A MAN usually interconnects a number of local area networks using a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks and the...
(MANs) and Ethernet WANWANWAN may refer to:* Wide area network * World Association of Newspapers* Wanborough railway station in England, which has the station code WAN...
s. It relies on a new, optional sublayer in the data link layer of the Open Systems InterconnectionOpen Systems InterconnectionOpen Systems Interconnection is an effort to standardize networking that was started in 1977 by the International Organization for Standardization , along with the ITU-T.-History:...
(OSI) model. The OAM features covered by this protocol are Discovery, Link Monitoring, Remote Fault Detection, Remote Loop back.
See also
- Provider Backbone Transport
- ITU-TITU-TThe ITU Telecommunication Standardization Sector is one of the three sectors of the International Telecommunication Union ; it coordinates standards for telecommunications....
- IEEE 802.1IEEE 802.1IEEE 802.1 is a working group of the IEEE 802 project of the IEEE Standards Association.It is concerned with:* 802 LAN/MAN architecture* internetworking among 802 LANs, MANs and other wide area networks* 802 Link Security* 802 overall network management...
- International Telecommunication UnionInternational Telecommunication UnionThe International Telecommunication Union is the specialized agency of the United Nations which is responsible for information and communication technologies...
- OAMPOAMPOAMP, traditionally OAM&P, stands for operations, administration, maintenance, and provisioning. The addition of 'T' in recent years stands for troubleshooting, and reflects its use in network operations environments...
- Carrier EthernetCarrier EthernetCarrier Ethernet is a marketing term for extensions to Ethernet to enable telecommunications network providers to provide Ethernet services to customers and to utilize Ethernet technology in their networks....
- Metro Ethernet ForumMetro Ethernet ForumThe Metro Ethernet Forum , founded in 2001, is a nonprofit international industry consortium, dedicated to worldwide adoption of Carrier Ethernet networks and services....