Congestion Control Congestion Control Frame relay provides no means of flow control between the user and the network. This leads to the possibility of congestion in the network.
Congestion causes different problems depending on the severity of the congestion.
Mild congestion can result in a lowering of data throughput rates in the network as well as an increase in delay experienced by frames traversing the network. Severe congestion can drive the effective throughput of a network to zero, increase the frame delay without bounds, and result in loss of frames. Congestion control mechanisms work to minimize the possibility of congestion occurring in the network. The ITU has defined standards to define congestion control. Minimize frame discard.