Beta Draft Confidential
10-441/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring ATM PVCs
Configuring Frame Relay-to-ATM Interworking Circuits
CLP/DE Mapping Parameters — At the Frame Relay UNI endpoint, configure the
following CLP/DE parameters, which apply to both ATM-to-Frame Relay
Interworking PVCs and Frame Relay-to-ATM Interworking PVCs:
•Map DE to CLP
• Set CLP to 0 Always
• Set CLP to 1 Always
For information about configuring CLP/DE mapping parameters, see “User
Preference Attributes” on page 10-60.
EFCI/FECN Mapping Parameters — There are no user-configurable parameters for
EFCI and FECN mapping. For ATM to Frame Relay Interworking PVCs, EFCI is
always mapped to FECN; for Frame Relay to ATM Interworking PVCs, EFCI is set to
0 (zero). For information about configuring EFCI/FECN mapping, see Table 10-13 on
page 10-61.
Note – For ATM-to-Frame Relay Interworking PVCs, the Set CLP to 0 Always and
Set CLP to 1 Always CLP/DE parameters are relevant only to Frame Relay-to-ATM
Service Interworking (FRF.8) configurations. For Frame Relay-to-ATM Network
Interworking (FRF.5) configurations, these parameters are interpreted as No Mapping.
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