RMON

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The Remote Network Monitoring (RMON) MIB was developed by the IETF to support monitoring and protocol analysis of local area networks (LANs). The original version (sometimes referred to as RMON1) focused on OSI layer 1 and layer 2 information in Ethernet and Token Ring networks. It has been extended by RMON2 which adds support for Network- and Application-layer monitoring and by SMON which adds support for switched networks. It is an industry-standard specification that provides much of the functionality offered by proprietary network analyzers. RMON agents are built into many high-end switches and routers.