JUNOS Internet Software Network Operations Guide: Hardware
48 ! Basic Router Component Monitoring Method
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 software 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 software 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 29 and “Gather Component Alarm Information” on page 33. Verify the
problem and fix it if possible; for more information, see “Verify the Component
Problem” on page 34 and “Fix the Problem” on page 35. 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 35 and “Return
the Failed Component” on page 36.
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