# Determination of Redundancy Status for Line Modules and SRP Modules Using Status LEDs

You can determine the redundancy state of line modules and SRP modules by examining their status LEDs. See Table 4 for a description of the LEDs functions. In addition, if you issue the show version command, the state field for the slot that contains the redundant SRP module indicates standby.

Table 4: Function of the Online and Redundant LEDs

Online LED | Redundant LED | State of the Module
--- | --- | ---
Off | Off | Module is booting or is an inactive primary line module.
On | Off | Module is active, but no redundant module is available.
Off | On | Module is in standby state.
On | On | Module is active, and a redundant module is available.

#### Related Documentation

- Line Module Redundancy Overview
- Understanding SRP Module Redundancy