Instruction Manual
147
RMON
RMON is the most important expansion of the standard SNMP. RMON is a set
of MIB definitions, used to define standard network monitor functions and
interfaces, enabling the communication between SNMP management terminals
and remote monitors. RMON provides a highly efficient method to monitor
actions inside the subnets.
RMON1 MIB consists of 10 groups. The switch supports the most frequently used
group 1, 2, 3 and 9:
•
Statistics
- Maintain basic usage and error statistics for each subnet monitored
by the Agent.
•
History
- Record periodical statistic samples available from Statistics.
•
Alarm
- Allow management console users to set any count or integer for
sample intervals and alert thresholds for RMON Agent records.
•
Event
- A list of all events generated by RMON Agent.
Alarm depends on the implementation of Event. Statistics and History display
some current or historical subnet statistics. Alarm and Event provide a method
to monitor any integer data change in the network, and provide alerts upon
abnormal events (sending Trap or record in logs)
Clearing RMON Statistics
1.
On the
Port GE1 RMON Statistics
page, click the
Clear
button to clear the
RMON statistic information.
2.
The following information is displayed:
•
Port:
Allows you to select the port you wish to view the RMON statistics on,
from the drop-down list.
•
Drop Events:
The number of events where packets were dropped by the
probe due to the lack of resources.
•
Octets:
the number of octets of data (including bad packets) received.
•
Packets:
The number of packets (including bad, broadcast, and multicast
packets) received.
•
Boardcast Packets:
the number of good packets received addressed to the
broadcast address.
•
Multicast Packets:
The number of packets received addressed to the
multicast address.
