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Isolating Problems
Troubleshooting the Power and Cooling Systems
Check the following items to help isolate the problem:
•
When the power switch is in the ON position (|) and the System OK LED is on, are the
fans operating? If not, check the fans.
•
Does the router shutdown after being ON a short time? Check the environmental
conditions. The router might be overheating, resulting in a thermal-induced shutdown.
Ensure that the chassis intake and exhaust vents are clear. Review the section "General
Site Requirements" in the chapter "Preparing to Install the Router." The operating
temperature for the router is 32 to 104
•
Does the router fail to boot, but the System OK LED is on? Check the power supply.
•
Does the router constantly or intermittently reboot? There might be a problem with
either the processor or the software, or a DRAM SIMM might be installed incorrectly.
For information about obtaining technical support, refer to the section "Obtaining Service
and Support" in the "Overview of the Router" chapter.
Troubleshooting the Ports, Cables, and Connections
Check the following items to help isolate the problem:
•
Does the router fail to recognize a port? Check the cable connection.
•
When the power switch is in the ON position (|), is the System OK LED on? If not,
check the power source and power cable.
•
Does the system boot, but the console screen is frozen? Verify that the console is
configured for 9600 baud, 8 data bits, no parity, and 2 stop bits.
For information about obtaining technical support, refer to the section "Obtaining Service
and Support" in the "Overview of the Router" chapter.
A-2 Router Installation and Configuration Guide
° F (
°
0 to 40
C
).
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