Frame Relay Terms And Definitions (cont’d)
FECN Forward Explicit Congestion Notification
- Bit set by the network node (FR Switch) that is experiencing congestion
- Sent in the direction of the receiver (destination)
BECN Backward Explicit Congestion Notification
- Bit set by the network node that is experiencing congestion
- Sent in the direction of the sender (source)
DE Discard Eligible bit
- Set by either the DTE (access device FRAD, router etc.) or the network nodes (switches)
- May be set selectively by some DTE devices
- May be set by network nodes in the event the user has exceeded CIR and the network is experiencing congestion