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9.1.3
SNMP
The Simple Network Management Protocol (SNMP) is the most widely used network management
protocol in TCP/IP networks. SNMP enables you to remotely manage all your network devices
compliant with this protocol, such as monitoring the network status, changing network device
settings, and receiving network event alarms.
SNMP allows automatic management of devices from various vendors regardless of physical
differences among the devices.
SNMP management framework
The SNMP management framework consists of the SNMP manager, SNMP agent, and Management
Information Base (MIB).
SNMP manager: It is a system that controls and monitors network nodes using the
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SNMP protocol. The SNMP manager most widely used in network environments is
Network Management System (NMS). An NMS can be a dedicated network
management server, or an application that implements management functions in a
network device.
SNMP agent: It is a software module in a managed device. The module is used to
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manage data about the device and report the management data to an SNMP
manager.
MIB: It is a collection of managed objects. It defines a series of attributes of managed
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objects, including names, access permissions, and data types of objects. Each SNMP
agent has its MIB. An SNMP manager can read and/or write objects in the MIB based
on the permissions assigned to the SNMP manager.
SNMP operations
There are mainly three operations based on SNMP:
Get: The SNMP manager sends a request to retrieve the value of a variable or list of
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variables.
Set: The SNMP manager sends a request to change the value of a variable or list of
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variables.
Trap: The SNMP agent notifies the SNMP manager of significant events by an
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unsolicited SNMP message.
An SNMP manager manages SNMP agents in an SNMP network. The SNMP manager exchanges
management information with the SNMP agents using the SNMP protocol. The ONT functions as
an SNMP agent.
The ONT is compatible with SNMP V1 and SNMP V2C and adopts the community authentication
mechanism.
To access the page, log in to the web UI of the ONT and choose Advance > Advance > SNMP.
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