Manual

37
Switch Overview SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide
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
SmartStack STS16-20D/STS16-20R 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 SmartStack STS16-20D/
STS16-20R will send a trap to the client. This monitoring method reduces traffic
between the SNMP client and the SmartStack STS16-20D/STS16-20R.
The switch implements a mini RMON probe for the physical ports by supporting
some of the RMON groups RFC 1757 and RFC 1513.
For full RMON an external probe must be used.
For information on supported groups, see the following table:
Name Support Info
1.
Statistics
:
Supported:
— The Token-Ring MAC-Layer Statistics Group.
The Token-Ring Promiscuous Statistics Group.
2. History Supported
:
— The Token-Ring MAC-Layer History Group.
— The Token-Ring Promiscuous History Group.
3. Alarm
—
Supported
for all RMON variables.
—
Not supported
for other MIB variables.
4. Hosts Not supported.
5. HostTopN Not supported.
6. Matrix Not supported.
7. Filter Not supported.
8. Capture Not supported
.
Table 9. Supported RMON Groups