Cisco XR 12410 - Manual (Page 132)

Chapter 4 Troubleshooting the Installation
Troubleshooting Overview
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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
Troubleshooting Overview
This section describes the methods used in troubleshooting the router. The
troubleshooting methods are organized according to the major subsystems in the
router.
If you are unable to solve a problem on your own, you can contact a Cisco
customer service representative for assistance. When you call, have the following
information ready:
• Date you received the router and the chassis serial number (located on a label
on the back of the chassis).
• Installed line cards.
– Use the show hardware command to determine which line cards are
installed if possible.
• Cisco software release number.
– Use the show version command to determine this information if
possible.
• Brief description of the symptoms and steps you have taken to isolate and
solve the issue.
• Maintenance agreement or warranty information.
Troubleshooting Using a Subsystem Approach
To solve a system problem, try to isolate the problem to a specific subsystem.
Compare current router behavior with expected router behavior. Because a startup
issue is usually attributable to one component, it is most efficient to examine each
subsystem, rather than trying to troubleshoot each router component.
For troubleshooting purposes in this chapter, the router consists of the following
subsystems:
• Power subsystem—Includes the following components:
– AC-input or DC-input power supplies, also called power entry modules
(PEMs). The router chassis is shipped with fully-redundant PEMs
installed in the chassis.