Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
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Information About RMON
RMON is an Internet Engineering Task Force (IETF) standard monitoring specification that defines a set of statistics and functions that can be exchanged between RMON-compliant console systems and network probes. RMON provides comprehensive network-fault diagnosis, planning, and performance-tuning information.
The switch supports these RMON groups (defined in RFC 1757):
Because switches supported by this software release use hardware counters for RMON data processing, the monitoring is more efficient, and little processing power is required.
![]() Note | 64-bit counters are not supported for RMON alarms. |
How to Configure RMON
RMON is disabled by default. No alarms or events are configured.
You can configure your switch for RMON by using the command-line interface (CLI) or an SNMP-compatible network management station.
![]() Note | 64-bit counters are not supported for RMON alarms. |
Follow these steps to enable RMON alarms and events.
To disable an alarm, use the no rmon alarm number global configuration command on each alarm you configured. You cannot disable at once all the alarms that you configured. To disable an event, use the no rmon event number global configuration command.
Follow these steps to collect group history statistics on an interface. This procedure is optional.
You must first configure RMON alarms and events to display collection information.
To disable history collection, use the no rmon collection history index interface configuration command.
Follow these steps to collect group Ethernet statistics on an interface. This procedure is optional.
To disable the collection of group Ethernet statistics, use the no rmon collection stats index interface configuration command.
Command | Purpose |
---|---|
show rmon | Displays general RMON statistics. |
show rmon alarms | Displays the RMON alarm table. |
show rmon events | Displays the RMON event table. |
show rmon history | Displays the RMON history table. |
show rmon statistics | Displays the RMON statistics table. |
Related Topic | Document Title |
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System Commands |
Command Reference, Cisco IOS Release 15.2(2)E |
Description | Link |
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To help you research and resolve system error messages in this release, use the Error Message Decoder tool. |
https://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi |
Standard/RFC | Title |
---|---|
None |
- |
MIB | MIBs Link |
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All supported MIBs for this release. |
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: |
Description | Link |
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