Chapter 21: RMON Configuration Guide

Standard RMON Groups

This section describes the RMON groups that are enabled when you specify the Standard support level. The Standard RMON groups are shown in the table below.

Table 7. Standard RMON Groups

Group

Function

 

 

Host

Records statistics about the hosts discovered on the network.

 

 

Host Top N

Gathers the top n hosts, based on a specified rate-based

 

statistic. This group requires the hosts group.

 

 

Matrix

Records statistics for source and destination address pairs.

 

 

Filter

Specifies the type of packets to be matched and how and

 

where the filtered packets should flow (the channel).

 

 

Packet Capture

Specifies the capture of filtered packets for a particular

 

channel.

 

 

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.

Table 8. Professional RMON Groups

Group

Function

 

 

Protocol Directory

Contains a list of protocols supported by the SSR and

 

monitored by RMON. See the RMON 2 Protocol Directory

 

appendix in the SmartSwitch Router Command Line Interface

 

Reference Manual.

 

 

Protocol Distribution

Records the packets and octets for specified ports on a per

 

protocol basis.

 

 

Application Layer

Monitors traffic at the application layer for protocols defined

Host

in the protocol directory.

 

 

Network Layer Host

Monitors traffic at the network layer for protocols defined in

 

the Protocol Directory.

 

 

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SmartSwitch Router User Reference Manual

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Cabletron Systems SmartSwitch manual Standard Rmon Groups, Professional Rmon Groups