[113393] in North American Network Operators' Group
Re: Forward Erasure Correction (FEC) and network performance
daemon@ATHENA.MIT.EDU (Matthew Kaufman)
Fri Apr 10 14:59:09 2009
Date: Fri, 10 Apr 2009 11:47:25 -0700
From: Matthew Kaufman <matthew@eeph.com>
To: Lamar Owen <lowen@pari.edu>
In-Reply-To: <200904101431.43141.lowen@pari.edu>
Cc: nanog@nanog.org
Reply-To: matthew@eeph.com
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Lamar Owen wrote:
> On Friday 10 April 2009 13:43:26 Matthew Kaufman wrote:
>> The bit error rate of copper is better than 1 error in 10^9 bits. The
>> bit error rate of fiber is better than 1 error in 10^12 bits. So the
>> packet loss rate of the transport media is approximately zero.*
>
> This sounds pretty good, until you realize that it means you can expect 36
> errors in 10 hours on a 100% utilized gigabit fiber link.
>
That *still* sounds good to me. There's a reason reliable transport
protocols work the way they do... and integrity protection better than
simple checksums is well-understood these days as well.
Matthew Kaufman
