Agent And Manager Communication - Avaya G430 Manual

SNMP

Agent and manager communication

There are several ways that the SNMP manager and the agent communicate. The manager
can:
Retrieve a value (get): The SNMP manager requests information from the agent, such as the
number of users logged on to the agent device or the status of a critical process on that device.
The agent gets the value of the requested Management Information Base (MIB) variable and
sends the value back to the manager.
Retrieve the value immediately after the variable you name (get-next): The SNMP
manager retrieves different instances of MIB variables. The SNMP manager takes the variable
you name and then uses a sequential search to find the desired variable.
Retrieve a number of values (get-bulk): The SNMP manager retrieves the specified number
of instances of the requested MIB variable. This minimizes the number of protocol exchanges
required to retrieve a large amount of data.
Note:
Get-bulk is not supported in SNMPv1.
Change a configuration on the agent (set): The SNMP manager requests the agent to
change the value of the MIB variable. For example, you can run a script or an application on
a remote device with a set action.
Receive an unsolicited message (notification): The SNMP manager receives an unsolicited
message from an agent at any time if a significant, predetermined event takes place on that
agent. When a notification condition occurs, the SNMP agent sends an SNMP notification to
the device specified as the trap receiver or trap host. The SNMP Administrator configures the
trap host, usually the SNMP management station, to perform the action needed when a trap
is detected.
Note:
For a list of traps and MIBS, see Gateway Traps for the Avaya G250, G350, G450, and
G700 Media Gateways.
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October 2013