[pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3)

Cameron Byrne cb.list6 at gmail.com
Tue Jun 28 10:52:39 CDT 2011


On Tue, Jun 28, 2011 at 8:39 AM, Leigh Porter
<leigh.porter at ukbroadband.com> wrote:
>
>
>> -----Original Message-----
>> From: Andreas Ott [mailto:andreas at naund.org]
>> Sent: 28 June 2011 16:27
>> To: Eugen Leitl; williamejsalt at googlemail.com
>> Cc: NANOG list
>> Subject: Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2
>> (+3)
>>
>> -andreas
>> [who has to explain this about once a week to customers who think
>> that they bought a GigE connection but then can't "ftp" a file from
>> coast to coast at 1Gbps throughput. Use multiple TCP streams!]
>
> Yeah, try explaining to a VSAT customer why they don't get 10Mb/s on their 10Mb/s VSAT connection with a 600ms RTT!
>
> The response is.. "I don't care, I want my 10Mb/s!"...
>

In the 3G world, i have had good results overcoming longish RTT by
using the Hybla TCP algorithm  http://hybla.deis.unibo.it/

I am hoping it gets more default traction, especially in wireless
where the radio link is a pretty big latency source

Cameron

> --
> Leigh
>
>
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