Table of Contents
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Part 3
Chapter 12
Chapter 14
Monitoring Key and Common Router Components
Understanding Key Router Components ........................................................92
Packet Forwarding Engine .......................................................................92
Data Flow Through the Router Packet Forwarding Engine ................93
Routing Engine ......................................................................................104
Routing Engine Functions ...............................................................105
Understanding the Router Chassis ...............................................................108
Checking the Router Chassis Component Status ..........................................117
Check the Component Environmental Status.........................................118
Check the Component Status from the Craft Interface...........................118
Checking Router Alarms...............................................................................119
Display Current Component Alarms ......................................................120
Display Component Error Messages in the System Log File...................121
Display Component Errors in the Chassis Daemon Log File...................122
Verifying Router Component Failure ............................................................122
Replacing a Failed Component.....................................................................122
Understanding the Routing Engine...............................................................127
Routing Engine Types and Characteristics .............................................127
M7i and M10i Router Routing Engine..............................................128
M320 Router Routing Engine ..........................................................129
T320 Router and T640 Routing Node Routing Engine .....................130
Routing Engine Locations ......................................................................130
M5, M10, and M20 Router Routing Engines Location......................131
M7i and M10i Router Routing Engine Location ...............................131
M40 Router Routing Engine Location ..............................................132
M40e and M160 Router Routing Engine Location ...........................133
M320 Router Routing Engine Location ............................................134
Routing Engine Redundancy..................................................................135
Routing Engine Component Companionship .........................................135
Routing Engine Boot Devices.................................................................135
Routing Engine Storage Media ...............................................................136
Table of Contents
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