
Configuring an Ethernet Data Collection Module
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• Detects and reports problems
You can configure the DCM to recognize and continuously check for error
conditions.
• Collects information for problem solving
You can configure the DCM to give management stations the information they
need to solve problems. For example, the DCM can identify which hosts on a
network generate the most traffic or errors.
See “RMON Implementa
tion Notes” on page 6-14 for issues you should consider
when using an Ethernet DCM for RMON.
RMON Groups
The RMON agent runs on the DCM and comprises a set of MIB groups. RFC
1757 defines the function and organization of these groups. Bay Networks
implements the following groups in its RMON agent:
• Ethernet Statistics
• History Control
• Ethernet History
• Host
• HostTopN
• Matrix
• Filter
• Packet Capture
• Alarm
• Event
RMON groups contain control tables and data tables. Control tables contain
control parameters that specify which statistics you want to access. You can view
and change many entries in a control table. Data tables contain statistics that the
RMON agent obtains; typically, you can only view entries in these tables.
Some of the groups work together to provide a particular RMON function. For
example, the History Control group and the Ethernet History group work together
to provide the history capability in the RMON agent for the DCM.
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