Filter
Top Products
Select: Select the
desired entry to delete the corresponding
management station.
IP Address: Displays the IP Address of the management host.
UDP Port: Displays the UDP port used to send notifications.
User: Displays the User name of the management station.
Security Model: Displays the Security Model of the management station.
Security Level: Displays the Security Level for the SNMP v3 User.
Type: Displays the type of the notifications.
Timeout: Displays the maximum time for the switch to wait for the
response from the management station before resending a
request.
Retry: Displays the amount of times the switch resends an inform
request.
Operation: Click the Edit button to modify the corresponding entry and click
the Modify button to apply.
12.3 RMON
RMON (Remote Monitoring) basing on SNMP (Simple Network Management Protocol)
architecture, functions to monitor the network. RMON is currently a commonly used network
management standard defined by Internet Engineering Task Force (IETF), which is mainly used to
monitor the data traffic across a network segment or even the entire network so as to enable the
network administrator to take the protection measures in time to avoid any network malfunction. In
addition, RMON MIB records network statistics information of network performance and
malfunction periodically, based on which the management station can monitor network at any time
effectively. RMON is helpful for network administrator to manage the large-scale network since it
reduces the communication traffic between management station and managed agent.
RMON Group
This switch supports the following four RMON Groups defined on the RMON standard (RFC1757):
History Group, Event Group, Statistic Group and Alarm Group.
RMON Group Function
History Group After a history group is configured, the switch collects and records network
statistics information periodically, based on which the management station
can monitor network effectively.
Event Group Event Group is used to define RMON events. Alarms occur when an event is
detected.
Statistic Group Statistic Group is set to monitor the statistic of alarm variables on the specific
ports.
Alarm Group Alarm Group is configured to monitor the specific alarm variables. When the
value of a monitored variable exceeds the threshold, an alarm event is
generated, which triggers the switch to act in the set way.
177