Juniper M Series User Manual

The Simple Network Management Protocol (SNMP) network manager software running
on a network management system (NMS) in the network operations center (NOC)
discovers, polls, and exchanges network management information with the Junos OS
SNMP agent running on Juniper Networks routers. The SNMP network manager software
collects information about router connectivity, operation, and events.
The SNMP agent responds to requests for information and controls access to its
Management Information Bases (MIBs). The MIBs define all objects that can be managed
on the router via SNMP. The Junos OS chassis MIB provides environmental monitoring
information on the router and its components. MIB objects represent each component
and the status of the components.
A trap is generated and reported to the SNMP manager software when a significant event
occurs on the router, such as an error or failure. When a trap occurs, you can log in to that
router to get specific operational status information about the problem; for more
information, see “Check the Router Component Status” on page 60 and “Gather
Component Alarm Information” on page 67. Verify the problem and fix it if possible; for
more information, see “Verify the Component Problem” on page 114 and “Fix the Problem”
on page 114. If you cannot verify or fix the problem, contact the Juniper Networks Technical
Assistance Center (JTAC) for more advanced analysis and troubleshooting, and return
the component once failure is verified; for more information, see “Contact JTAC” on
page 115 and “Return the Failed Component” on page 116.
Related
Documentation
Basic Router Component Monitoring Tools on page 52•
Basic Router Component Monitoring Tools
Table 17 on page 52 lists and describes the purposes of the basic tools you use to monitor
router hardware.
Table 17: Basic Tools for Monitoring Router Components
Purpose
Router Component Monitor
Tool
•
The Junos OS SNMP agent runs on Juniper Networks routers,
exchanging network management information with SNMP
manager software running on an NMS or host. The SNMP
manager collects information about network connectivity,
activity, and events by polling the router. The agent responds
to requests for information and actions from the manager.
•
The SNMP agent also controls access to the agent’s MIBs.
The Junos OS chassis MIB represents each component and
the status of the components.
•
The agent sends a trap to the SNMP manager software
when an event occurs on the router. A trap reports significant
events occurring on a network device; for example, most
often errors or failures.
Junos OS SNMP Agent, MIBs,
and traps
Copyright © 2012, Juniper Networks, Inc.52
M Series and T Series Routers Monitoring and Troubleshooting Guide

Juniper M Series Specifications

General

Brand	Juniper
Model	M Series
Category	Network Router
Language	English