Techo

Hi folks! Thanks in advance for any tips/suggestions. I'm simply using the TPing component for a while now. Works great overall. Trying to figure out why a ping might fail. Ever since upgrading to win7/8 , the ping happens to fail now and then, when it would have no reason to. Using Size=56 , Timeout=200. TTL=64 and v5 of TPing. WinXP to WinXP is fine 100% of the time. WinXP->Win7/8 or Win7/8->Win7/8 has a bit of failure rate.

Another quick update. Will test on peer to peer Win10 pc's. And see if that helps. Cheers!

Quick update. Changing the TTL to 128 didn't help. Will check if using IPV4 changes anything, even though I'd prefer not to but for the sake of trouble shooting...

Yes, I can configure both PC's. I also noticed I left the default TTL to 64. I'm reading that Windows OSes would probably prefer the default start at 128. Thanks again! I'll write back soon. Adding on: This is an internal network so perhaps the TTL set to a default 64 most likely isn't the culprit but it's something to consider.

I see! I wouldn't have thought this would be an acceptable rate. With XP, the failure rate is almost non existent. I'll re-think my approach a bit. But Yes to the LAN and it's on one network switch/router segment. I check for a ping back and then check for a fileexists flag before proceeding with the rest, as sometimes a ping works but the network isn't available for file access. That could be due to a corrupt Windows OS or bad hardware. The ping is just the first line of the test. But when it fails it requires a human operator to click the "restart scan" (so to speak). The failed ping is hard to catch, so perhaps a re-try ping is enough. Up to 3 auto re-tries should be enough? Thank you, Mr. Piette. It means a lot to get direct feedback from you. I'll research this some more.

Thank you both for the replies. Much appreciated. Some good food for thought. It's quite random. e.g. 1000th pings work fine and then fails on the 1001st, 1002nd is ok. Perhaps the frequent ping is causing some network traffic or back up. I will try the command prompt Ping , set it to 1200 count and look through the log. Having XP->XP work perhaps says something? The newer OSes definitely have a slightly slower network refresh. I turned off all firewall and antivirus apps on some test machines. As an alternative, I can also try changing the ping timeout to 500 and lower the frequency/rate of the ping. This is part of a utility that checks which computers are online before proceeding with the rest of the work. As a last resort I can map the target PC's on the network as drive letters and see if that helps produce a quicker connect. I did read somewhere that with other ping methods one must run the app under administrative rights to be able to ping out , so some layer of security are adding random delays. Will test with dhsPinger and write back. Thanks again! Edited to add: Will check to see if changing PCs running Win7/8 under IPv6 to IPv4 will help.