NetComm NB6 - Manual (Page 125)

YML854 Rev1 NB6, NB6W, NB6Plus4W NB6, NB6W, NB6Plus4W User Guide
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SNMP Setting (NB6W and NB6Plus4W only)
SNMP, the abbreviation of Simple Network Management Protocol, is used to refer to a collection of
specifications for network management that include the protocol itself, the definition of data structures and
associated concepts.
A management station performs the monitoring function by retrieving the value of MIB objects. The
management station and agents are linked by a network management protocol that is SNMP. The SNMP
includes three key capabilities:
get, set and trap. A single management station can handle many agents as
long as SNMP remains relatively “simple”, so the number can be high (hundreds or so).
The following picture is the typical configuration of protocols for SNMP. As for a stand-alone management
station, a manager process controls access to a central MIB at the management station and provides an
interface to the network manager. The manager process achieves network management by using SNMP, which
will be implemented on top of the UDP, IP and the relevant network-dependent protocols (e.g., Ethernet).
For an agent device that supports other applications, such as FTP, both TCP and UDP are required. An agent
may issue a trap message in response to an event that affects the MIB and the underlying managed resources.
Note: There is no ongoing connection maintained between a management station and its agents. Instead,
each exchange is a separate transaction between a management station and an agent.
Each agent is responsible for notifying the management station of any unusual event; for example, if the
agent crashes and is rebooting, a link fails or an overload condition as defined by the packet load crosses
some threshold. These events are communicated in SNMP messages known as
traps.
Please select SNMP from the Management menu to make the following settings.