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6–Diagnostics and Troubleshooting
LED Blink Patterns
ISR651101-00 J 6-3
All other system fault blink patterns show critical errors. The heartbeat LED shows
an error blink pattern for the conditions listed in Table 6-1.
Heartbeat Blink Pattern
A blink pattern on the heartbeat LED of one second ON followed by one second
OFF means that the router is operating normally. The heartbeat LED shows this
pattern when the router firmware is operational
.
System Error Blink Pattern
The system fault LED generates a three-blink pattern (once per second) followed
by a two-second pause to indicate a system error.
Management Port IP Address Conflict Blink Pattern
The system fault LED generates a four-blink pattern (once per second) followed
by a two-second pause when the router detects an IP address conflict on the
management Ethernet port.
You can clear the IP address conflict blinking using the CLI or SANsurfer Router
Manager. Use the beacon OFF function.
Table 6-1. System Fault LED Blink Patterns
System Fault LED Condition
OFF Okay, operational
3 Blinks, followed by pause System error
4 Blinks, followed by pause Management port IP address conflict
5 Blinks, followed by pause Over-temperature