| Description | This object defines the Marking threshold
applied to the Frame Relay - ATM interworking
virtual circuit output queue, on the Frame Relay
PAM.
The output queue is in the direction of the ATM
switch fabric to the Frame Relay/FUNI interface.
If the fill level of the output queue for the
Frame Relay - ATM interworking virtual circuit
exceeds this threshold, the following will
happen:
1. For frames coming into the Frame Relay -
ATM interworking virtual circuit from the Frame
Relay side, the frame will have the BECN bit set
in the Frame Relay header before getting converted
to cells and entering the ATM switch fabric.
2. For cells arriving from the ATM switch fabric
side for this Frame Relay - ATM interworking
virtual circuit, the corresponding frames will
have the Forward Explicit Congestion Notification
(FECN) bit set in the Frame Relay header upon
exiting the Frame Relay interface. For FUNI -
ATM interworking connections, the Congestion
Notification (CN) bit gets set in the FUNI
header.
The threshold value is expressed as a
percent-of-full. Setting this object to 100
effectively turns off the threshold. |