C H A P T E R
8-1
Cisco 1800 Series Routers (Modular) Hardware Installation Guide
OL-5876-03
8
Troubleshooting Cisco 1800 Series Routers
(Modular)
If you encounter problems with your Cisco 1800 series integrated services router (ISR) (modular), the
information in this chapter can help you isolate problems in the router or eliminate the router as the
source of the problem.
This chapter contains the following sections:
•
Problem Solving, page 8-1
•
Reading LEDs, page 8-4
•
System Messages, page 8-5
•
Recovering a Lost Password, page 8-6
•
More Troubleshooting Help, page 8-6
Note
To troubleshoot interface cards, see
Overview of Cisco Interface Cards for Cisco Access Routers
.
If you cannot locate the source of the problem, contact a Cisco customer service representative for
information on how to proceed. For technical support information, see the
“Obtaining Documentation
and Submitting a Service Request” section on page 1-15
. Before you call, have the following
information ready:
•
Chassis type and serial number
•
Maintenance agreement or warranty information
•
Type of software and version number
•
Date you received the router
•
Brief description of the problem
•
Brief explanation of the steps you have taken to isolate the problem
Problem Solving
The key to problem solving is to isolate the problem to a specific subsystem by comparing what the
router is doing to what it should be doing.
The LEDs on the router aid you in determining router performance and operation. The LEDs are
described in the
“Reading LEDs” section on page 8-4
.
