Line Module Requirements

To configure NAT, you must install a Tunnel Service line module (TSM) or a Service line module (SM). For information about installing modules in the E-series router, see the E-series Hardware Guide.

Unlike other line modules, TSMs and SMs do not pair with corresponding I/O modules that contain ingress and egress ports. Instead, they receive data from and transmit data to other line modules with access to ingress and egress ports on their own associated I/O modules.

For a list of the modules that support NAT, see E-series Module Guide, Appendix A, Module Protocol Support.