4.3.6 Flow Control (1/2)
nSliding
window is used as the flow control technique (matching of sender and receiver data rates): Each end system will advertise
the largest window
it is willing to receive without ACKs, i.e., packets that can be outstanding
between source and
destination.
nThis
value is dynamic, it changes based upon how fast the receiver can read the
arriving data. It is always
advertised in the messages sent from the destination to the source. Note however that the TCP congestion control mechanism does
kick in too and affects
the amount of data that can be sent.