# SRP-120 Module

> Module label | SRP-120
> IOA label | SRP IOA
> Number of IOA ports | Not applicable
> Software release | First supported: 8.2.0
> Description | 140 W maximum Switch route processor (120 Gbps) Performs system management, route table calculations and maintenance, forwarding table computations, statistics processing, configuration storage, and other control plane functions Has 4 GB of memory Works with the SFM–120 module to create a switch fabric The 120–Gbps fabric allocates 10 Gbps of overall bandwidth to each line module slot. Uses an ATA flash card to store the system's software and configuration files Two flash cards are required for operation Must be installed only with SRP-120 module and SFM–120 modules
> Capability | Not applicable
> Software features | Not applicable
> Model compatibility | E120 router
> Line module compatibility | ES2 4G LM ES2 10G UPLINK LM ES2 10G LM ES2 10G ADV LM
> SRP module compatibility | SRP-120 Cannot use with SRP-100 module or SFM-100 module Cannot use with SRP-320 module or SFM-320 module
> Module redundancy support | 1:1 redundancy
> Port redundancy support | Not applicable
> Cables and connectors | Not applicable
> LEDs | Board-level LEDs: OK (green)—Self-test passed FAIL (red)—Failure detected ONLINE (green)—Online with no alarms or errors REDUN (green)—Module is the spare system controller, is up, and is ready to take the role of the online system controller. When LED is not lit, module is not acting as the spare system controller. PA (green)—Power source on source A PB (green)—Power source on source B FO (green)—Fan OK FF (red)—Fan failure LK (green)—Ethernet link up AC (green)—Blinks when there is Ethernet activity (traffic) on link Flash Card Port LEDs: 0 (green)—When lit, indicates slot is busy 1 (green)—When lit, indicates slot is busy
> Alarms, errors, and events | See Monitoring Modules in JunosE System Basics Configuration Guide, Chapter 6, Managing Modules.