Matthew Toseland wrote: >> TCP fast retransmits 1 when 2,3,4 have been acked, without considering >> the RTT. The simulator code also checks that 1 was last sent >> 1.5*RTT+MAX_DELAY seconds ago, but this is just to prevent 1 from being >> retransmitted again when 5 is acked. > > Okay so TCP has a cooldown instead? Won't resend a given packet more > often than once per RTT?
I'm not sure - I believe TCP only fast retransmits each packet once, so subsequent retransmissions would be due to timeouts (checked every 500ms). Cheers, Michael
