RMON ( Remote Network Monitoring)

RMON ( Remote Network Monitoring), the initial design is used to address from a center point of management of the local network and the remote site. The RMON specification is by SNMP MIB extensions. RMON, network monitoring data contains a set of statistical data and performance indicators, they are in different monitor (or detectors) and console systems to communicate with each other. Outcome data can be used to monitor the network utilization for network planning, performance optimization and assist network fault diagnosis.

The current RMON is available in two versions : RMON V1 and RMONv2. RMON V1 in the widely used network hardware can be found, it defines 9 MIB group serving the basic network monitoring ; RMON V2 extension to RMON focus on MAC layer above the higher of the flow, which emphasized the IP flow and application layer traffic. RMON V2 allows the network management application monitors all network layer packets, unlike RMONv1, which only allows the monitoring of MAC and below the layer information packets.

The RMON monitoring system is composed of two parts : detector ( agent or monitor) and the station. RMON agent in RMON MIB storage of network information, they were directly implanted into the network equipment (such as routers and switches), agents can also be a PC machine running a program. Agents can only see through their flow, so at each monitoring section LAN or WAN links point to set the RMON agent, network management workstation with SNMP RMON access to data and information.

RMON MIB has many variants. For example, token ring RMON MIB provides for token network management object. SMON MIB is composed of RMON expansion, mainly used to exchange network with RMON analysis.