The TCP implementation ACKs every other data packet. So you should see, typically, two data packets received and then an ACK sent. The sender, of course, is not waiting for the ACK …

I'm getting excessive TCP Dup ACK and TCP Fast Retransmission on our network when I transfer files over the MetroEthernet link. The two sites are connected by one sonicwall router, so the …

2011年5月6日 · You'll find duplicate ACK's, TCP Retransmits, broadcasts, errant protocols, etc. on every network. You should focus on the volume of duplicate ACK's and the hosts most …

2011年2月16日 · Basically, what is happening is that the client's machine is sending the SYN packet to establish the TCP connection and the web server receives it, but does not respond …

2017年2月23日 · So the ACK delay mechanism loses the bet, over and over, delaying the ACK, waiting for a packet on which the ACK can be piggybacked, not getting it, and then sending …

I have just been reading this explanation of TCP sequence & acknowledgment numbers. About half-way down there is this diagram: Near the end of the page, the explanation of the final …

TCP Retransmits; Duplicate ACK; Segment lost; If you receive a TCP retransmit, this is because the ACK you have sent was not received by the server. The server was not aware the TCP …

A latency-sensitive application does not want to wait around for TCP's efficiency delays so the application will usually disable them, causing data to be sent as quick as possible with a Push …

2014年12月5日 · tcpdump "tcp[tcpflags] & (tcp-syn|tcp-ack) != 0" Check out the tcpdump man page , and pay close attention to the tcpflags. Be sure to also check out the sections in the …

The client in this case uses nonblocking sockets, so the connect() call will return immediately while the kernel keeps waiting for the SYN,ACK packet from server. Unfortunately the client …