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CerberusBot-1471 avatar image
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CerberusBot-1471 asked CerberusBot-1471 commented

Microsoft Network Packet Loss

Hello,

I am experiencing packet loss from a microsoft node as I try to connect to a server.
I first noticed this issue as I disconnect from the server every 2 hours exactly.

I pasted my traceroute which shows packet loss from a node listed as microsoft network.

How do I go about fixing this issue?

116176-winmtrimage.png


windows-10-networkazure-virtual-network
winmtrimage.png (28.1 KiB)
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1 Answer

SaiKishor-MSFT avatar image
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SaiKishor-MSFT answered CerberusBot-1471 commented

@CerberusBot-1471 Thank you for reaching out to Microsoft Q&A.

I understand that you are facing issues with disconnections from your server every 2 hours and when you did a MTR test, you see packet loss at a Microsoft Node.

Looking at the test result, I don't see the packet loss that persists till the last hop i.e., 65.52.242.211 where it shows 0 packet loss%. Usually when a MTR test shows packet loss at intermediate hops but not at the subsequent hops, it usually mean that there is ICMP rate limiting that is causing apparent packet loss. Therefore, this is not an indication that there is an actual packet loss. Please refer to Diagnosing-network-issues-with-mtr that explains how to diagnose issues using MTR results.

In regard to your server disconnection issue, please let us know the following:

  • Which port/protocol do you connect to the server on?

  • Do you receive an error message when you get disconnected? If yes, please share the same.

  • Does this happen only to one PC that connects to this server or does anyone else also see the same issue? Can you test by sourcing traffic to this server from a different PC?

  • Do you see any issues with the server itself such as high CPU etc.,?

  • Have you done packet captures on both sides to see if either side sends a TCP RST/FIN message to end the connection every 2 hours?

Please let me know the above details so we can troubleshoot the issue further. Thank you!


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It's a game server with a general disconnect message unfortunately so nothing specific. Upon reaching out to their server support they easily point to the this spot on the packet capture.

The strange thing is I was having the same problem for a few months but the perceived packet loss (or just the icmp restriction) was on a different node labeled as like "nyc' instead of this "ewr". Last Friday this finally was resolved and I had no issues and the MTR was perfect. I unfortunately don't know who fixed the issue.

As of yesterday the issue came back but now it appears I'm going through a new routing path and I once again see the perceived packet loss on this new node.

I am willing to do further packet capture and investigation but I think there's already a solution out there and I'm unsure how to obtain it again.

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