User guide

18-12 E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
S
TATUS
M
ONITORING AND
S
TATISTICS
RMON
Using the Remote Monitoring (RMON) capabilities of the switch allows network
administrators to improve system efficiency and reduce the load on the network.
The following sections explain more about the RMON concept and the RMON features
supported by the switch.
You can only use the RMON features of the system if you have an RMON
management application, and have enabled RMON on the switch.
A
BOUT
RMON
RMON is the common abbreviation for the Remote Monitoring Management
Information Base (MIB) system defined by the Internet Engineering Task Force (IETF)
documents RFC 1271 and RFC 1757, which allows you to monitor LANs remotely.
A typical RMON setup consists of the following two components:
• RMON probe — An intelligent, remotely controlled device or software agent that
continually collects statistics about a LAN segment or VLAN. The probe transfers
the information to a management workstation on request, or when a predefined
threshold is crossed.
enable log display Enables the log display.
enable syslog Enables logging to a remote syslog host.
show log {<priority>} Displays the current snapshot of the log.
Options include:
■
priority — Filters the log to display
message with the selected priority or higher
(more critical). Priorities include critical,
emergency, alert, error, warning, notice,
info, and debug. If not specified, all
messages are displayed.
show log config Displays the log configuration, including the
syslog host IP address, the priority level of
messages being logged locally, and the priority
level of messages being sent to the syslog
host.
Table 18-5: Logging Commands (continued)
Command Description