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I am troubleshooting a problem with a particular host 10.102.5.6. &nbsp;I see that host 163.230.31.72 sends to it fine most of the time. &nbsp;However, it appears that there are times when 10.102.5.6 is not responding so 163.230.31.72 retries (repeated SYN) and terminates the session with an RST. &nbsp;The attached packet capture snippet shows this beginning with packet 563818.<br />
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I need an expert to confirm the above.<br />
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Thanks!<br />
<a href="https://filedb.experts-exchange.com/incoming/2012/09_w36/601339/TCP-retries-1.txt" target="_blank" class="file-inline" title="Packet capture (49 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>TCP-retries-1.txt</a>
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TCP-retries-1.txt

I am troubleshooting a problem with a particular host 10.102.5.6.  I see that host 163.230.31.72 sends to it fine most of the time.  However, it appears that there are times when 10.102.5.6 is not responding so 163.230.31.72 retries (repeated SYN) and terminates the session with an RST.  The attached packet capture snippet shows this beginning with packet 563818.

I need an expert to confirm the above.


Thanks!

TCP protocol confirmation

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.