[ns] congestion window size limit?

[Wenxuan Zhou]

Hi all,

I met a problem about TCP congestion window size in NS-2 simulation. The
setting is pretty simple: two nodes connected by a link (bandwidth 1Gbps,
delay 20ms). But I found out the window size didn't increase after it
reached 20, and there was no packet loss at all. So I was wondering if NS-2
has some limitation on congestion window size.
Could any one do me a favor to answer this question?

Thanks!

~Wenxuan