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Chapter 3 Troubleshooting
Problem Solving
3-8
Cisco 815 Integrated Services Router Hardware Installation Guide
OL-9558-01
Troubleshooting WICs and Cables
Use the show diag command to help determine problems with a card. Table 3-2
lists problems that could occur with WAN interface cards (WICs) and the possible
causes of these problems.
Table 3-1 OK LED Blinking Patterns
Number of Blinks Meaning
2 The 860P dual-port random-access memory (DPRAM) has
failed.
3 The parameter RAM area of the 860P DPRAM has failed.
4 The 860P system protection control register has a write
failure.
5 The router cannot detect the dynamic random-access
memory (DRAM).
6 The user programmable machine has a write failure.
9 The router DRAM has failed.
Table 3-2 Troubleshooting WICs
Symptom Possible Cause(s)
Router does not recognize
WIC.
• Confirm that the Cisco IOS software version installed in the router
supports the WIC. The Cisco Interface Cards Hardware
Installation Guide lists the software requirements for each card.
• Use the show diag command to display information about the card
as shown in Example, page 3-9.
Router recognizes the
WIC(s), but the card port(s)
do not initialize.
• Make sure that the WIC is correctly installed in the router.
• Check the external cable connections to make sure they are secure.
Router does not boot
properly, or router
continuously or
intermittently reboots.
Make sure that the WIC is correctly installed in the router.