28-4 Riverstone Networks RS Switch Router User Guide Release 8.0
Configuring and Enabling RMON
RMON Configuration
Professional RMON Groups
The Professional RMON groups correspond to the RMON 2 groups defined in RFC 2021. While RMON 1 groups
allow for the monitoring of packets at the MAC layer, RMON 2 groups focus on monitoring traffic at the network and
application layers.
The Professional RMON groups are shown in the table below.
28.1.3
Control Tables
Many RMON groups contain both control and data tables. Control tables specify what statistics are to be collected.
For example, you can specify the port for which statistics are to be collected and the owner (name, phone, or IP
address) for that port. You can change many of the entries in a control table with
rmon
commands. Data tables contain
the collected statistics. You cannot change any of the entries in a data table; you can only view the data.
When you specify the Lite, Standard, or Professional RMON groups, you have the option of creating default control
tables. A default control table creates a control table entry for every port on the RS. Creating default control tables
essentially configures data collection for every port on the RS for certain RMON groups. If you do not want this, you
can choose not to create the default control tables and then configure the appropriate control tables for the data you
wish to collect. Even if you use the default control tables, you can always use the
rmon
commands to modify control
table entries.
If you choose to create default control tables, entries are created in the control tables for each port on the RS for the
following groups:
Lite groups:
Etherstats
History
Standard groups:
Host
Matrix
Table 28-3 Professional RMON groups
Group
Function
Protocol Directory
Contains a list of protocols supported by the RS and monitored by RMON. See the
RMON 2 Protocol Directory appendix in the
Riverstone RS Switch Router Command
Line Interface Reference Manual
.
Protocol Distribution
Records the packets and octets for specified ports on a per protocol basis.
Application Layer Host
Monitors traffic at the application layer for protocols defined in the protocol directory.
Network Layer Host
Monitors traffic at the network layer for protocols defined in the Protocol Directory.
Application Layer Matrix
(and Top N)
Monitors traffic at the application layer for protocols defined in the Protocol Directory.
Top N gathers the top n application layer matrix entries.
Network Layer Matrix (and
Top N)
Monitors traffic at the network layer for protocols defined in the Protocol Directory.
Top N gathers the top n network layer matrix entries.
Address Map
Records MAC address to network address bindings discovered for specified ports.
User History
Records historical data on user-defined statistics.
