Monitoring M5 and M10 Router Components ! 5
Chapter 1: M5 and M10 Internet Router Overview
Field-replaceable units (FRUs) are router components that can be replaced at the
customer site. Replacing FRUs requires minimal router downtime. There are three
types of FRUs:
! Hot-removable and hot-insertable—You can remove and replace the
component without powering down the router or interrupting the routing
functions.
! Hot-pluggable—You can remove the component without powering down the
router, but routing functions are interrupted until the replacement is installed.
! Requires router shutdown—You must power down the router before removing
the component.
Monitoring M5 and M10 Router Components
See the following chapters for information about monitoring the M5 and M10 router
components:
! “Monitoring the Router Chassis” on page 107
! “Monitoring the Routing Engine” on page 125
! “Monitoring PICs” on page 183
! “Monitoring the Craft Interface” on page 197
! “Monitoring Power Supplies” on page 217
! “Monitoring Redundant Power Supplies” on page 507
! “Monitoring the Cooling System” on page 251
! “Monitoring Redundant Cooling System Components” on page 523
! “Maintaining the Cable Management System, Cables, and Connectors” on
page 275
! “Monitoring the FEB” on page 453
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