User's Manual

ISO 9001:2000 Cert. N°4500/1
Version 1.1 SDT_ARK6_User_Manual_ENG_vATSC Page 144 of 206
7 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, ARK6 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.mib
 screen-common-types.mib
 ark6-t2.mib
 clk-ref.mib
 clock.mib
 gps.mib
 hw-monitor.mib
 input.mib
 measure.mib
 s2-fe.mib2
 ark6.mib
 network.mib
 output.mib
 screen-common.mib
 t2-fe.mib
 t2-meas.mib
 t2-modulation.mib
 ts-over-ip.mib
 itu-modulation.mib2
 t-fe.mib2
 t-meas.mib2
 t-modulation.mib2
 ark6-atsc.mib2
 ark6-isdbt.mib2
 ark6-itu.mib2
 ark6-t.mib2
 atsc-fe.mib2
 atsc-meas.mib2
 atsc-modulation.mib2
 isdbt-fe.mib2
 isdbt-meas.mib2
 isdbt-modulation.mib2
Compatibility tested and assured with SNMP version 1 and 2.