Chapter 8: RMON using Enterprise Device
Manager
The Remote Network Monitoring (RMON) MIB is an interface between the RMON agent on an Ethernet
Routing Switch 3500 Series and an RMON management application, such as Enterprise Device Manager
(EDM).
The RMON agent defines objects that are suitable for the management of any type of network, but some
groups are targeted for Ethernet networks in particular.
The RMON agent continuously collects statistics and monitors switch performance. You can view this data
through EDM.
RMON has three major functions:
• creating and displaying alarms for user-defined events
• gathering cumulative statistics for Ethernet interfaces
• tracking a history of statistics for Ethernet interfaces
Working with RMON information:
You can view RMON information by reviewing the Graph information associated with the port or
chassis.
Displaying RMON statistics using EDM
You can use EDM to gather Ethernet statistics that you can graph in a variety of formats. You
can save the statistics output to a file and export the statistics to an outside presentation or
graphing application.
The following types of RMON statistics are available:
• Absolute — The total count since the last time counters were reset. A system restart resets
all counters
• Cumulative — The total count since the statistics tab was first opened. The elapsed time
for the cumulative counter appears at the bottom of the graph window.
• Average/sec — The cumulative count divided by the cumulative elapsed time.
• Min/sec — The minimum average for the counter for a given polling interval over the
cumulative elapsed time.
Configuration — System Monitoring March 2013 79
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