Specifications

ManualsBrandsDaewoo ManualsTVDTA-2131Z

DTC-325

Affordable Tools for Digital-TV Professionals March 2015

6. SNMP Remote Control

6.1. About SNMP

Commonly used in the broadcast industry, the Simple Network Management Protocol (SNMP) is an

open standard that enables management and monitoring of remotely controlled devices over TCP/IP

network. SNMP is defined in RFC 1157, "A Simple Network Management Protocol (SNMP)" (*). The following

link provides also a nice introduction to SNMP: http://www.cisco.com/warp/public/535/3.html (**).

Similar to a client<->server configuration, an SNMP Manager (client) accesses a remote controlled

SNMP Agent (server) and browse through its hierarchical structure called the MIB (Management

Information Base) to check statuses and set parameters. Each node of the hierarchical structure

receives an address-like OID (Object Identifier). For the SNMP Manager to know SNMP Agent’s

nodes and properties, the MIB information available as a MIB file can be imported to the SNMP

Manager. An SNMP Trap mechanism permits also the SNMP Agent to report information, error or

any event to the SNMP Manager.

The following graph shows a simple system architecture where DTU-124 connected DtGrabber+

applications (running over the network 192.168.20.x) other SNMP controlled equipments (on a

separate network 192.168.30.x) are managed by a SNMP Manager (192.168.10.101).

1U rack PC

DTA-124

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1U rack PC

DTA-124

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1U rack PC

DTA-124

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SNMP Manager Station

192.168.10.101

192.168.20.202

192.168.20.201

192.168.20.N

TCP/IP

Network

TCP/IP

Network

SNMP Agent #X

Encoder

SNMP Agent #Y

Multiplexer

SNMP Agent #Z

Matrix Switcher

SNMP Agent #1

SNMP Agent #2

SNMP Agent #N

192.168.30.X

192.168.30.Y

192.168.30.Z

SNMP Control – Example of SNMP Controlled Network

Each DekTec function that is controllable by SNMP has its OID defined under 1.3.6.1.4.1.27070,

which stands for ISO(1).ORG(3).DOD(6).INTERNET(1).PRIVATE(4).ENTERPRISE(1).DEKTEC(27070)

Check section 6.4 for explanation about the OID and MIB structure of DekTec function controllable

by SNMP.

(*) SNMP is part of a larger architecture called the Internet Network Management Framework (NMF), which is defined in Internet

documents called requests for comments (RFCs). The SNMPv1 NMF is defined in RFCs 1155, 1157, and 1212, and the SNMPv2 NMF is

defined by RFCs 1441 through 1452.