Which behaviour of TCP Reno after 3 DUP ACK is correct:
- The one described in the Italian Wikipedia (https://it.wikipedia.org/wiki/Controllo_della_congestione_in_TCP#TCP_Reno). It says the new cwnd is: cwnd_new = cwnd_old/2 + 3*MSS
- The one described in the English Wikipedia (https://en.wikipedia.org/wiki/TCP_congestion_control#TCP_Tahoe_and_Reno). It says the new cwnd is: cwnd_new = cwnd_old/2
I guess, it's the Italian Wikipedia that is right, since also the FSM in the book "Computer Networking: A Top-Down Approach, Kurose & Ross" shows it like that (http://www.linyibin.cn/images/Technology-ComputerNetworking-Internet-TCP-CongestionControl.png).
Is there a (good) reason why many sources neglect the term "+3*MSS"?