Which two statistics appear in show frame-relay map output? (Choose two.)
A.
the number of BECN packets that are received by the router
B.
the value of the local DLCI
C.
the number of FECN packets that are received by the router
D.
the status of the PVC that is configured on the router
E.
the IP address of the local router
The show frame-relay map command displays the remote network address to local DLCI mapping, and indicates the remote network destinations reachable via the connected Frame Relay network.
show frame-relay pvc
The show frame-relay pvc privileged EXEC mode command displays detailed information of the PVC statistics on the router.
Router#show frame-relay pvc
PVC Statistics for interface Serial3/0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 101, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial3/0
0
0
In a frame relay network, FECN (forward explicit congestion notification) is a header bit transmitted by the source (sending) terminal requesting that the destination (receiving) terminal slow down its requests for data. BECN (backward explicit congestion notification) is a header bit transmitted by the destination terminal requesting that the source terminal send data more slowly. FECN and BECN are intended to minimize the possibility that packets will be discarded (and thus have to be resent) when more packets arrive than can be handled.
0
0
In general, BECN is used on frames traveling away from the congested area to warn source devices that congestion has occurred on that path while FECN is used to alert receiving devices if the frame experiences congestion.
BECN also informs the transmitting devices to slow down the traffic a bit until the network returns to normal state.
0
0
Frame – PVC – dlci
0
0