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RMON Support
RMON is an industry-standard method for providing network statistics monitoring
using SNMP. It also collects fault, performance, and configuration statistics. It can
monitor continuously, even when communication with the management station is
not possible or efficient. RMON can then notify the management station when an
exceptional condition occurs.
In typical SNMP management, the SNMP client has to continuously poll the switch
for fault, performance, and configuration information, waiting for the value to
change. This causes increased traffic through the network. With RMON, you can
have the switch monitor a particular statistic internally, and when the statistics
reaches a threshold, the switch will send a trap to the client. This monitoring
method reduces traffic between the SNMP client and the switch.
The following groups are supported in RFC-1513 Token-Ring Extensions RMON
MIB
•
The Token-Ring Mac-Layer Statistics Group
•
The Token-Ring Promiscuous Statistics Group
•
The Token-Ring Mac-Layer History Group
•
The Token-Ring Promiscuous History Group
•
The Token-Ring Ring Station Group (SETs not supported)
•
The Token-Ring Ring Station Order Group.
The Following Groups are supported in RFC-1757 RMON MIB for both Token-
Ring and Fast Ethernet ports.
•
The Statistics Group (group 1)
•
The History Control Group (group 2)
•
The Event Group (group 9)
•
The Alarm Group (group 3)
Full RMON support for a selected subset of ports is implemented by an external
RMON Probe.
Note: Remember to enable RMON Statistics on the SNMP Configuration menu.
Note: Access to RMON data is available only via an SNMP management
application that supports RFC 1757 and RFC 1513. You cannot access RMON via
the console interface of the switch.
CrossFire 8730 Switch Reference Guide, DOC-7047 v. 1.1
39
Switch Overview
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