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13 SNMP Manager
SNMP Agent and MIB (Management Information Base).
SNMP Management Station: SNMP Management Station is the workstation for running the
SNMP client program, providing a friendly management interface for the administrator to
manage the most network devices conveniently.
SNMP Agent: Agent is the server software operated on network devices with the responsibility
of receiving and processing the request packets from SNMP Management Station. In the
meanwhile, Agent will inform the SNMP Management Station of the events whenever the
device status changes or the device encounters any abnormalities such as restarting the
device.
MIB: MIB is the set of the managed objects. MIB defines a few attributes of the managed
objects, including the names, the access rights, and the data types. Every SNMP Agent has its
own MIB. The SNMP Management station can read/write the MIB objects basing on its
management right.
SNMP Management Station is the manager of SNMP network while SNMP Agent is the
managed object. The information between SNMP Management Station and SNMP Agent are
exchanged through SNMP (Simple Network Management Protocol). The relationship among
SNMP Management Station, SNMP Agent and MIB is illustrated in the following figure.
13.1 SNMP Account
13.1.1 SNMP Community
Create SNMP account.
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Select SNMP version (v1 and v2c)
Type a community name; it is a string of 3 to 16 characters.
Select the privilege (RW and RO)
RO: Specifies the community that has been created has read-only permission to access
MIB objects. Communities of this type can only query MIBs for device information.
RW: Specifies the community that has been created has read-write permission to access
MIB objects. Communities of this type are capable of configuring devices.
The community list is shown at the lower part of the interface.
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