Q-Logic ISR6142 manual LED Blink Patterns, Heartbeat Blink Pattern, System Error Blink Pattern

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5 – Diagnostics and Troubleshooting LED Blink Patterns

LED Blink Patterns

The heartbeat and system fault LEDs show the operational status of the router. When the POST completes with no errors, the heartbeat LED will blink once every second. When the router is in maintenance mode, the heartbeat and system fault LEDs are on continuously.

All other system fault blink patterns show critical errors. The heartbeat LED shows an error blink pattern for the conditions listed in Table 5-1.

Table 5-1. System Fault LED Blink Patterns

System Fault LED	Condition
OFF	OK - 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

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.

SN0051102-00 A 5-3