User Manual

Enterasys X-Pedition User Reference Manual 457
Configuring and Enabling RMON
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.
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 16. 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.
Table 17. Professional RMON Groups
Group Function
Protocol Directory Contains a list of protocols supported by the XP and monitored by
RMON. See the RMON 2 Protocol Directory appendix in the
Enterasys X-Pedition 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.