# Service Module (SM) Module Combination

> Line module label | SERVICE MODULE
> I/O module label | No I/O module
> Number of I/O ports | Not applicable
> Software release | First supported: 5.1.0 Final supported: Not applicable
> Description | 130 W Tunnel Service for IP tunnels, L2F tunnels, and LNS termination
> Type | EFA ASIC
> Capability | IP tunnels LNS termination Network Address Translation Stateful firewall
> Software features | See Service Modules for information about the layer 2 and layer 3 protocols and applications that this module combination supports.
> Model compatibility | ERX7xx models ERX14xx models ERX310 router
> SRP module compatibility | SRP-5G+ SRP-10G SRP-40G SRP-40G PLUS SRP-SE10G
> Module redundancy support | Multiple SMs provide redundancy. See JunosE Physical Layer Configuration Guide, Chapter 6, Managing Tunnel-Service and IPSec-Service Interfaces
> Cables and connectors | Not applicable
> LEDs | See Module LEDs.
> Alarms, errors, and events | See Monitoring Tunnel-Service Interfaces in JunosE Physical Layer Configuration Guide, Chapter 6, Managing Tunnel-Service and IPSec-Service Interfaces.