A P P E N D I X A Runtime LED Diagnostics
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Runtime LED Diagnostics

Runtime Activity

At runtime, the LEDs provide information about system activity as
described below.

Status LED

•Blinks on and off quickly when operating normally.
•Continuous on or off indicates troubled (hung) system.

Activity LEDs

The following table describes the runtime behavior of the Status and
Activity LEDs (Act 1, Act 2)

Runtime Errors

At runtime, the 7190’s health-monitoring processes indicate critical
error conditions by turning off the Status LED and flashing error
patterns on the two Activity LEDs.
Status Act 1 Act 2 Condition
1 sec on,
1 sec off Off Off DNS Server is Running
1 sec on,
1 sec off Solid Off 1000 – 3500 DNS Queries/sec
1 sec on,
1 sec off Solid Solid > 3500 DNS Queries/sec
Solid Solid Solid DNS Server is Down
Off Off Flash N IC F ailure
Flash Flash Flash Health Montoring Failure (each LED
lights in sequence)
Runtime Errors