Network Monitoring; Rmon Support - Foundry Networks Switch and Router Installation And Configuration Manual

This chapter provides a general overview of monitoring tools supported on Foundry Layer 2 Switches and Layer 3
Switches. Configuration examples are provided using the CLI and Web management interfaces.

RMON Support

All Foundry Networks Layer 2 Switches and Layer 3 Switches come standard with an RMON agent that supports
the following groups. The group numbers come from the RMON specification (RFC 1757).
• Statistics (RMON Group 1)
• History (RMON Group 2)
• Alarms (RMON Group 3)
• Events (RMON Group 9)
The CLI allows you to make configuration changes to the control data for these groups, but you need a separate
RMON application to view and display the data graphically.
Statistics (RMON Group 1)
Count information on multicast and broadcast packets, total packets sent, undersized and oversized packets,
CRC alignment errors, jabbers, collision, fragments and dropped events is collected for each port on a Foundry
Layer 2 or Layer 3 Switch.
No configuration is required to activate collection of statistics for the switch or router. This activity is by default
automatically activated at system start-up.
USING THE CLI
You can view a textual summary of the statistics for all ports by entering the following CLI command:
NetIron(config)# show rmon statistics
Syntax: show rmon statistics
NOTE: To see RMON statistics for an individual port only, enter the following command noting a specific port
entry number: show rmon statistics <entry-number>.
USING THE WEB MANAGEMENT INTERFACE
To view the RMON statistics for the system:
December 2000
Appendix B

Network Monitoring

B - 1