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.

Card and Service Configuration 6-25

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Cisco Systems MGX-FRSM-HS2, MGX-FRSM-2CT3, MGX-FRSM-2T3E3 manual Congestion Indication

MGX-FRSM-HS2, MGX-FRSM-2T3E3, MGX-FRSM-2CT3 specifications

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