Supported Platforms
Related Documentation
Ethernet Pseudowire Overview
An Ethernet pseudowire is used to carry Ethernet or 802.3 Protocol Data Units (PDUs) over an MPLS network enabling service providers to offer emulated Ethernet services over existing MPLS networks. Ethernet or 802.3 PDUs are encapsulated within the pseudowire to provide a point-to-point Ethernet service. For the point-to-point Ethernet service, the following fault management features are supported:
- The IEEE 802.3ah standard for Operation, Administration,
and Management (OAM). You can configure IEEE 802.3ah OAM link-fault
management on Ethernet point-to-point direct links or links across
Ethernet repeaters.
Ethernet OAM link-fault management can be used for physical link-level fault detection and management. It uses a new, optional sublayer in the data link layer of the OSI model. Ethernet OAM can be implemented on any full-duplex point-to-point or emulated point-to-point Ethernet link. A system-wide implementation is not required; OAM can be deployed on particular interfaces of a router. Transmitted Ethernet OAM messages or OAM PDUs are of standard length, untagged Ethernet frames within the normal frame length limits in the range 64–1518 bytes.
- Ethernet connectivity fault management (CFM) to monitor
the physical link between two routers.
- Connection protection using the continuity check protocol for fault monitoring . The continuity check protocol is a neighbor discovery and health check protocol that discovers and maintains adjacencies at the VLAN or link level.
- Path protection using the linktrace protocol for path discovery and fault verification . Similar to IP traceroute, the linktrace protocol maps the path taken to a destination MAC address through one or more bridged networks between the source and destination.
