Remote monitoring
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Remote monitoring
Introduction
Remote Monitoring (RMON) allows network devices to exchange network monitoring data.
RMON performs the following major functions:
• Gathers cumulative statistics for Ethernet interfaces
• Tracks a history of statistics for Ethernet interfaces
• Creates and triggers alarms for user-defined events
Overview
The RMON MIB provides an interface between the RMON agent on the switch and an RMON
management application. The RMON MIB is described in RFC 1757.
The RMON standard defines objects that are suitable for the management of Ethernet networks. The
RMON agent continuously collects statistics and proactively monitors switch performance. RMON allows
you to monitor traffic flowing through the switch.
The switch supports the following RMON Groups, as described in RFC 1757:
• Group 1: Statistics
• Group 2: History
• Group 3: Alarms
• Group 9: Events
RMON group 1—statistics
The switch supports collection of Ethernet statistics as outlined in the RMON statistics MIB, in reference to
etherStatsTable. You can enable RMON statistics on a per-port basis, and you can view them using the
following command: /stat/port x/rmon. RMON statistics are sampled every second, and new data
overwrites any old data on a given port.
NOTE: RMON port statistics must be enabled for the port before you can view RMON statistics.
