Specifications

STB NIP 2311 Services
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SNMP Device Management
Introduction
The STB NIP 2311 NIM contains a Simple Network Management Protocol (SNMP)
Version 1.0 agent that is capable of supporting up to three concurrent SNMP
connections.
SNMP Agents and Managers
An SNMP manager communicates with an agent over UDP port 161 by sending
queries for the purpose of reading data from and writing data to the agent. SNMP
services are delivered via the UDP/IP stack.
The SNMP manager initiates communications with the agent. An SNMP manager
can query, read data from, and write data to other host devices. An SNMP manager
uses UDP to establish communications with an SNMP agent device via an open
Ethernet interface.
When the STB NIP 2311 NIM is successfully configured as an SNMP agent, the NIM
(as agent) and an SNMP manager recognize each other on the network. The SNMP
manager can then transmit data to and retrieve data from the STB NIP 2311.
SNMP Messages
SNMP supports the following types of messages between the manager and the
agent:
z Get: The manager requests an agent to send information.
z Set: The manager requests an agent to change information stored by the agent.
z Response: The agent replies to a Get or Set request.
z Trap: The agent sends an unsolicited report to the manager that an event has
occurred.
SNMP PDU Structure
An SNMP message is the innermost part of a typical network transmission frame: