Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Network Operation Manual page 12

JUNOS Internet Software Network Operations Guide: Hardware
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Table of Contents
Monitoring the Routing Engine Status ..........................................................136
Check the Detailed Routing Engine Status .............................................137
Check the Routing Engine LEDs.............................................................138
Check the M7i Routing Engine LEDs ...............................................139
Check the M10i Router Routing Engine LEDs ..................................139
Check the M20 Router Routing Engine LEDs...................................140
Check the M40 Router Routing Engine LEDs...................................142
Check the M40e and M160 Router Routing Engine LEDs ................143
Check the M320 Router Routing Engine LEDs.................................144
Check the T320 Router Routing Engine LEDs..................................144
Check the T640 Routing Node Routing Engine LEDs .......................145
Check the Redundant Routing Engine Status from the Craft Interface
CLI Output ......................................................................................146
Verifying Routing Engine Failure..................................................................149
Check Core Files If the Routing Engine Reboots ....................................149
List the Core Files Generated After A Crash Occurs .........................149
Display the Messages Log File After A Crash Occurs .......................150
Example of When No Core File Is Generated...................................150
Example of Boot Messages If Routing Engine Fails to Boot .............150
Check for Compact Flash Media and Hard Disk Failure .........................150
When the Compact Flash Is Removed from the Boot List................151
Determine Why Compact Flash Did Not Mount ..............................151
When the Hard Disk Is Removed from the Boot List .......................152
Verify That the Hard Disk Did Not Mount........................................152
Verify That the Hard Disk Is Missing from The Boot List .................153
View Alarms When Media Is Removed from the Boot List ..............153
Understand What Happens When Memory Failures Occur ....................154
Check the Router File System and Boot Disk .........................................154
Display the Current Routing Engine Alarms...........................................155
Display Error Messages in the System Log File ......................................155
Document the Events Prior to the Failure ..............................................156
Getting Routing Engine Hardware Information ............................................157
Display Routing Engine Hardware Information......................................157
Locate the Routing Engine Serial Number ID Label................................158
M7i Router Routing Engine Serial Number ID Label Location..........158
M10i Router Routing Engine Serial Number ID Label Location........158
Teknor Type 2 Routing Engine Serial Number ID Label Location ....158
M40 Router Routing Engine Serial Number ID Label Location.........159
M320 Router Serial Number ID Label Location................................160
T320 Router and T640 Routing Node Serial Number ID Label
Location....................................................................................160
Removing a Routing Engine .........................................................................161