Cisco Systems MGX-FRSM-2T3E3 Manual de usuario descargar pdf (Pagina 25)

Card and Service Configuration 6-25

Frame Relay-to-ATM Service Interworking

• CLP is always 1.

In the ATM-to-Frame Relay direction, you can specify a CLP-to-DE mapping scheme for an

individual connection:

• If one or more ATM cells belonging to a frame has CLP=1, the DE field of the Frame Relay frame

is set.

• DE is always 0.

• DE is always 1.

Congestion Indication

This section describes congestion indictors. You can modify the CLP and congestion indicators for

individual connections. On the CLI, use the cnfchanmap command. In the Frame Relay-to-ATM

direction, you can configure a Frame Relay-to-ATM SIW connection for one of the following

Forward Explicit Congestion Notification (FECN)-to-Explicit Forward Congestion Indicator (EFCI)

schemes:

• FECN bit in the Frame Relay frame is mapped to the EFCI bit of every ATM cell generated by

the segmentation process of the frame.

• EFCI is always 0.

• EFCI is always 1.

In the ATM-to-Frame Relay direction, service interworking connections use the following EFCI to

FECN/BECN mapping schemes:

• If the EFCI bit in the last ATM cell of a segmented frame received is set to 1, the FECN of the

Frame Relay frame is set to 1.

• BECN is always set to 0.

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Cisco Systems MGX-FRSM-2T3E3 Manual de usuario Pagina 25