User's Manual Part 3

Screen Service SDT 501 UB-C ARK 1-T Operations
May, 2010 v 1.0 Page 3 - 119
3.12 SNMP – Simple Network Management Protocol
The SNMP model assumes the existence of managers and agents. A manager is a software
module in a management system responsible for managing the device. An agent is a
software module in a managed device responsible for maintaining local management
information and delivering that information to a manager via SNMP. A management
information exchange can be initiated by the manager (via polling) or by the agent (via trap).
Interaction between a user of board management and the board management software
takes place across a user interface. Such an interface is needed to provide users with a
monitoring and controlling tool in order to allow some parameters to be viewed or set locally.
The operations that are supported in SNMP network management are the alteration and
inspection of variables. Specifically, three general-purpose operations may be performed on
scalar objects:
• Get: a management station retrieves a scalar object value from a managed station.
• Set: a management station updates a scalar object value in a managed station.
• Trap: a managed station sends an unsolicited scalar object value to a management
station.
Management information accessible via SNMP is maintained in a management information
base (MIB) at each manager and agent node.
On manager side, ARK1-T management system has been tested with MG-SOFT as MIB
Browser; besides compatibility with any other MIB browser is assured.
The following MIB libraries are required for the SNMP management of the equipment:
• SCREENSERVICE-SCB-BROADCASTING-MIB.my;
• ark1_r_1_7.MY.
Compatibility tested and assured with SNMP version 1 and 2.
Figure 29 shows a sample view of SNMP tree structure of ARK1-T.