# Module Protocol Support

This appendix lists the layer 2 and layer 3 protocols and applications that line modules and their corresponding I/O modules support. Modules are identified by their physical labels. See Table 1 for a list of modules and their identifying labels.

The designation “not yet fully qualified” that appears in some tables in this appendix indicates that support for the protocol or application on the specified module has not yet been fully qualified by Juniper Networks. If you use a feature before it has been fully qualified, it is your responsibility to ensure that it operates correctly in your targeted configuration.

This appendix contains the following sections:

- Ethernet Modules
- OCx/STMx GE/FE Modules
- OCx/STMx ATM Modules
- OCx/STMx POS and OC48 Modules
- Service Modules
- Unchannelized T3 Modules