2N NetStar Admin manual - Manual (Page 92)

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Remote Control (SNMP)
What is SNMP?
The forms a part of the Internet Simple Network Management Protocol (SNMP)
protocol suite as defined by the Internet Engineering Task Force (IETF). The SNMP is
used in network management systems for data acquisition and network monitoring for
administration purposes. It consists of a set of network management standards,
including the Application Layer protocol, a database schema and a set of data objects.
The SNMP is available in three versions. Compared with the first version, version 2 is
enhanced with authentication and version 3 with encryption. A majority of today's
devices support the SNMP version two.
There are two sides in the SNMP communication – the monitoring one and the
monitored one. These parts can run on separate physical devices or within one piece of
equipment. The monitored side is often called
and the monitoring side Agent Manager
. The monitoring side flexibly collects information on the system state. The s Manager
ends requests to the , mostly requesting some system state information. The Agent
provides responses to the . The communication is Agent Manager Agent–Manager
often marked as an . SNMP operation
OID alias is an identifier used for explicit identification of each value Object Identifier
in the SNMP communication. The OID is composed of a dot–separated sequence of
numbers where each dot represents one level of the OID tree structure. The numerical
identifications in subtrees are not unique and that is why the OID is always sent as a
whole string. Each company and each of its SNMP supporting devices has an
international OID of its own.
MIB alias is used for translation of OID strings into Management Information Base
a more comprehensible text. The can be extended to include more MIB database MIB
. files
Users
The SNMP v3 is a user oriented communication protocol. The user created in this part
of configuration corresponds to the
(User Security Model) in the SNMP v3 and to USM
in the other versions. In addition to standard options , and Community Add Delete
user, the option is available, which helps introduce the default SNMP Rename Default
setting, including creation of the user, right line and filters public Unrestricted
and . Internet NetStar Traps
Authentication – here define the password and way of encryption for
authentication.
Protocol – use the or methods to secure your password. MD5 SHA
Password – here enter the user password.
Privacy – here define the password and way of encryption for data transmission.
Protocol – use the or methods to secure your transmission. DES AES
Password – here enter the encryption password.
Access – here assign rights to a selected user using the list of available rights.