© 2002 FECN / BECN Frame Relay Network User data FECN=0 / BECN=0 User data FECN=1 / BECN=0 User data FECN=0 / BECN=0 User data FECN=0 / BECN=1 Client Server Congestion Congestion in the direction of Server The end stations (or Transport protocol such as TCP) shall take care of FECN/BECN to avoid congestion
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