Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.
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Link Layer Ethernet OAM
Link layer Ethernet OAM (Operations, Administration and Maintenance), as described in IEEE 802.3ah, monitors link status between directly connected devices in a layer 2 network. Because Link Layer Ethernet OAM operates at layer 2 of the OSI model, neither IP nor SNMP are necessary to monitor or troubleshoot network connection problems. See OSI Basic Reference Model, SNMP.