Operation Manual

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DDM Voltage:
If selected, the switch will send a DDM Voltage trap when t
he
value of DDM voltage exceeds the threshold.
DDM Bias Current:
If selected, the switch will send a DDM Bias Current trap when
the value of DDM bias current exceeds the threshold.
DDM Tx Power:
If selected, the switch will send a DDM Tx Power trap when t
he
value of DDM Tx power exceeds the threshold.
DDM Rx Power:
If selected, the switch will send a DDM Rx Power trap when t
he
value of DDM Rx power exceeds the threshold.

Port Traps
Port Select:
Click the Select button to quick-
select the corresponding port
based on the port number you entered.
Select:
Select your desired port for configuration. It is multi-optional.
Port:
Displays the port number.
Link Status:
Enable/Disable Link Status traps for the desired port.
Note:
To enable the Link Status traps for the desired port, please select the “Link Status” on the
SNMP Traps first, otherwise, it will not take effect.
14.3 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.