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## Module LEDs

This appendix describes the LEDs found on ERX modules. Module LEDs can show you the current status of a module and alert you to a problem with the module or one of its ports. We recommend that you familiarize yourself with LED activity so that you can easily detect and correct a module-related problem with minimal or no system downtime. This appendix contains the following sections:

- LED Identification
- Redundancy Status

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