nanog mailing list archives

Re: 10g residential CPE


From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Sat, 26 Dec 2020 16:55:08 +0100

lør. 26. dec. 2020 16.35 skrev Mikael Abrahamsson via NANOG <nanog () nanog org
:




Perhaps there are some issues at other parts of the network that limits
their speeds? I'm in Stockholm, Sweden, with plenty of local CDNs located
just 1-3ms away from me.


That is why. The RTT to the source can not be larger than the minimum
buffer size in the transport path. Otherwise the speed will start
decreasing.

Since a lot of ISP equipment only has tiny buffers you will generally be
unable to get great downloads from sources far away.

The other option is huge buffers which gives you better speed but with
buffer bloat issues.

Regards

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