Chapter 21 Remote Management
EMG3425-Q10A User’s Guide
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The managed devices contain object variables/managed objects that define each piece of
information to be collected about a device. Examples of variables include such as number of
packets received, node port status etc. A Management Information Base (MIB) is a collection of
managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing
these objects.
SNMP itself is a simple request/response protocol based on the manager/agent model. The
manager issues a request and the agent returns responses using the following protocol operations:
• Get - Allows the manager to retrieve an object variable from the agent.
• GetNext - Allows the manager to retrieve the next object variable from a table or list within an
agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it
initiates a Get operation, followed by a series of GetNext operations.
• Set - Allows the manager to set values for object variables within an agent.
• Trap - Used by the agent to inform the manager of some events.
To change your EMG3425-Q10A’s SNMP settings, click Configuration > Management > Remote
MGMT > SNMP to display the screen as shown.
Figure 86 Configuration > Management > Remote MGMT > SNMP
The following table describes the labels in this screen.
Table 65 Configuration > Management > Remote MGMT > SNMP
LABEL DESCRIPTION
SNMP Settings
Server Port The SNMP agent listens on port 161 by default. If you change the SNMP server port to a
different number on the EMG3425-Q10A, for example 8161, then you must notify
people who need to access the EMG3425-Q10A SNMP agent to use the same port.
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