[131886] in North American Network Operators' Group
Re: RINA - scott whaps at the nanog hornets nest :-)
daemon@ATHENA.MIT.EDU (Matthew Petach)
Sat Nov 6 23:21:04 2010
In-Reply-To: <5A6D953473350C4B9995546AFE9939EE0B14C7E3@RWC-EX1.corp.seven.com>
Date: Sat, 6 Nov 2010 20:19:38 -0700
From: Matthew Petach <mpetach@netflight.com>
To: George Bonser <gbonser@seven.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sat, Nov 6, 2010 at 5:21 PM, George Bonser <gbonser@seven.com> wrote:
...
> (quote)
> Let's take an example: New York to Los Angeles. Round Trip Time (rtt) is
> about 40 msec, and let's say packet loss is 0.1% (0.001). With an MTU of
> 1500 bytes (MSS of 1460), TCP throughput will have an upper bound of
> about 6.5 Mbps! And no, that is not a window size limitation, but rather
> one based on TCP's ability to detect and recover from congestion (loss).
> With 9000 byte frames, TCP throughput could reach about 40 Mbps.
I'd like to order a dozen of those 40ms RTT LA to NYC wavelengths, please.
If you could just arrange a suitable demonstration of packet-level delivery
time of 40ms from Los Angeles to New York and back, I'm sure there would
be a *long* line of people behind me, checks in hand. ^_^
Matt
