Network Router User Manual

Cell Mapping
46 SmartSwitch Router User Reference Manual
The following is a description of the parameters used to enable cell scrambling:
port <port list> Specifies the port, in the format: media.slot.port. Specify all-ports to
enable cell scrambling on all ports.
media Specifies the media type. This is at for ATM ports.
slot Specifies the slot number where the module is installed.
port Specifies the port number.
pdh-cell-scramble on|off
Specify on to enable cell scrambling. Specify off to disable cell
scrambling.
Cell Mapping
The ATM cells are mapped into a PDH (E3, T3, E1) frame using two different mapping
formats. The two mapping formats available are direct ATM cell mapping and physical
layer convergence protocol (PLCP) mapping.
Selecting the Cell Mapping Format
To select a cell mapping format on an ATM port, enter the following command in
Configure mode:
The following is a description of the parameters used to select the cell mapping format:
port <port list> Specifies the port, in the format: media.slot.port. Specify all-ports to
select the cell mapping format for all ports.
media Specifies the media type. This is at for ATM ports.
slot Specifies the slot number where the module is installed.
port Specifies the port number.
cell-mapping direct|plcp
Specify direct to select direct ATM cell mapping. Specify plcp to select
PLCP mapping.
Selects a cell mapping format on
an ATM port.
atm set port <port list> cell-mapping direct| plcp