Gateway Screening States

Gateway screening on a particular linkset can be set to function in one of four states:

NO SCREENING – Screening is not performed. All message signaling units (MSUs) are passed. This state is set by the gwsa=off and gwsm=off parameters of the ent-ls or chg-ls commands.

SCREEN AND REPORT – Screening is performed. When an MSU fails screening it is discarded, an output message is generated, and measurements are pegged. This state is set by the gwsa=on and gwsm=on parameters of the ent-ls or chg-ls commands.

SCREEN AND DON'T REPORT – Screening is performed. When an MSU fails screening it is discarded and measurements are pegged, but no output message is generated. This state is set by the gwsa=on and gwsm=off parameters of the ent-ls or chg-ls commands.

SCREEN TEST MODE – Screening is performed, but all MSUs are passed. When an MSU fails screening, an output message is generated, but the MSU is still passed. This state is set by the gwsa=off and gwsm=on parameters of the ent-ls or chg-ls commands.

Caution:

When Gateway Screening is in the screen test mode, any action in the gateway screening stop action set specified by the actname parameter at the end of the gateway screening process will be performed.

The gwsa and gwsm parameters are described in the Linkset Parameters section.