Controls the maximum value of the congestion window for an SCTP association.
1,048,576
128 to 1,073,741,824
Yes
Even if an application uses setsockopt (3XNET) to change the window size to a value higher than _cwnd_max, the actual window used can never grow beyond _cwnd_max. Thus, max_buf should be greater than _cwnd_max.
Unstable