VPN tunnels between US and China dropping/slow

Thomas York straterra at fuhell.com
Tue May 10 13:00:20 CDT 2011


Yes. Every day at roughly 2AM EDT the latency climbs to 700ms+ with about 25% packet loss and fluctuates until about 6-7AM.

-- Thomas York

Joel Jaeggli <joelja at bogus.com> wrote:

>On 5/10/11 10:10 AM, Adam Rothschild wrote:
>> Realize also that China Telecom is congested both internally and on
>> certain peering interfaces.
>> 
>> While DPI is a likely culprit, be sure to not overlook a good
>> old-fashioned inability to manage capacity, combined with certain
>> hashing algorithms...
>
>if you're measuring the end-to-end path you'll likely see evidenced of
>the latency climbing on a near daily cycle.
>
>my median rtt from the us east coast is 268ms sometimes it's north of
>370 with essentially the same loss properties.
>
>> -a
>> 
>


More information about the NANOG mailing list