Ok led diagnostics, Troubleshooting wics and vics – Cisco 1751 User Manual
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3-7
Cisco 1751 Router Hardware Installation Guide
78-11258-04
Chapter 3
Troubleshooting
Problem Solving
•
ISDN configuration—Consider ISDN-specific hardware and software
configurations (ISDN BRI WICs only).
OK LED Diagnostics
Use the front-panel OK LED to help determine any problems with the router.
When the router first boots up, it performs a power-on self-test (POST). If the
router detects a problem during the POST, the OK LED blinks in a different
pattern (described in
), depending on the problem. A pattern is a specific
number of blinks that is repeated until the router is turned off. If the router
experiences any of these problems, contact your Cisco reseller.
Troubleshooting WICs and VICs
Use the show diag command to help determine problems with a card.
Router# show diag
Slot 0:
C1751 1FE VE DV Mainboard Port adapter, 7 ports
Port adapter is analyzed
Port adapter insertion time unknown
EEPROM contents at hardware discovery:
Hardware Revision : 89.71
PCB Serial Number : JAB30343106
Part Number : 73-5128-02
Fab Version : 04
Table 3-1
OK LED Blinking Patterns
Number of Blinks
Meaning
2
The 860P dual-port RAM (DPRAM) failed.
3
The parameter RAM area of the 860P DPRAM failed.
4
The 860P system protection control register has a write
failure.
5
The router cannot detect the dynamic RAM (DRAM).
6
The user programmable machine has a write failure.
9
The router DRAM failed.