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Cisco 10008 Router Hardware Installation Guide
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Chapter 4 Starting and Configuring the Router
Troubleshooting Installation Problems
Troubleshooting Installation Problems
This section contains general troubleshooting information to help you solve any problems you might
encounter during the installation of the system. For any problems not covered in this section and for
more detailed troubleshooting information, see the Cisco 10000 Series Router Troubleshooting Guide.
For troubleshooting information specific to line cards, see the Cisco 10000 Series Routers Line Card
Hardware Installation Guide.
The following information is in this section:
• General Troubleshooting Tips, page 4-12
• Troubleshooting Ethernet Connections, page 4-13
• Troubleshooting the Console Port Serial Connection, page 4-14
General Troubleshooting Tips
All Cisco 10008 FRUs are hot-swappable. Procedures for removing and replacing the FRUs can be
found in Chapter 5, “Maintaining the Cisco 10008 Router.”
Table 4-3 lists general FRU fault symptoms and recommendations.
Table 4-3 General Troubleshooting Tips
Symptom Steps to Take
System fails to power
on
Check that:
• All power cords are properly connected to the Cisco 10008 router and
at the power connection end.
• The PEM power switches are in the On position.
–
For DC PEMs, the POWER LED should be on (green).
• The blower module is fully inserted (FANS OK LED is on (green).
System fails to boot up
properly
If the system has power, check the FAIL LED on the PRE and any
information on the alphanumeric display. If the FAIL LED is on, see the
Cisco 10000 Series Router Troubleshooting Guide.
DC PEM problem
• If the FAULT LED is on, see the Cisco 10000 Series Router
Troubleshooting Guide.
• If the MISWIRE LED is on, the –48V and return (RTN) wires are
reversed. Power off the PEM and reconnect the wires correctly (see the
“Connecting DC Power to the Cisco 10008 Router” section on
page 3-17).
System experiences a
critical alarm (Critical
LED on the PRE is on)
Enter the show facility-alarm status command at the console.
System experiences a
major alarm (Major
LED on the PRE is on)
Enter the show facility-alarm status command at the console.
System experiences a
minor alarm (Minor
LED on the PRE is on)
Enter the show facility-alarm status command at the console.