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Slow file transfer speeds

asked 2021-07-07 16:40:21 +0000

balcee gravatar image

Hi there

I hope someone can help with this. I'm looking into very slow file transfer speeds I'm getting in one of our remote offices. Internally, I'm seeing expected speeds of 20Mb when transferring a file, but when copying files over the WAN, it barely touches 1Mb.

Capture can be found at the following link:

My IP is Remote PC is

Any assistance would be much appreciated. The WAN provider insists their CPEs are fine with no throttling or traffic shaping in place. From the LAN side, I've checked the switches and firewall and everything looks fine.

Many thanks

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answered 2021-07-15 19:00:50 +0000

In the capture file I cannot see traffic to/from IP. What is the IP of your PC.

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answered 2021-07-09 11:24:28 +0000

BigFatCat gravatar image

If you look at TCP stream one, there is packet loss from (DUP-ACKS and SACKS from I would do another capture at the ingress point of into your network. That would tell you which direction to troubleshoot.

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Asked: 2021-07-07 16:40:21 +0000

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Last updated: Jul 09 '21