[165230] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: IP Fragmentation - Not reliable over the Internet?

daemon@ATHENA.MIT.EDU (Emile Aben)
Tue Aug 27 04:45:48 2013

Date: Tue, 27 Aug 2013 10:45:25 +0200
From: Emile Aben <emile.aben@ripe.net>
To: nanog@nanog.org
In-Reply-To: <20130827065522.GA26981@pob.ytti.fi>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On 27/08/2013 08:55, Saku Ytti wrote:
> On (2013-08-27 00:01 +0000), Christopher Palmer wrote:
> 
>> If anyone has any data or anecdotes, please feel free to send an off-list email or whatever. 
> 
> [ytti@ytti.fi ~]% ssh ring ring-all -t90 ping -s 1473 -c2 -w3 ip.fi|pastebinit
> http://p.ip.fi/KA7N
> 
> [ytti@sci ~]% curl -s http://p.ip.fi/KA7N|grep transmitted|wc -l
> 224
> [ytti@sci ~]% curl -s http://p.ip.fi/KA7N|grep "0 received"|wc -l 
> 10
> 
> UUOC wc, but that's how I roll.
> 
> 224 vantage points, 10 failed.

Same tests from RIPE Atlas pings towards
nl-ams-as3333.anchors.atlas.ripe.net today:

48 byte ping:    42 out of 3406 vantage points fail (1.0%)
1473 byte ping: 180 out of 3540 vantage points fail (5.1%)

Of the 180 vantage points that failed for the 1473 byte ping, 142 were
successful in receiving at least 1 reply for the 48 byte ping.

Measurement IDs in RIPE Atlas are 1019675 and 1019676.

Emile Aben
RIPE NCC


home help back first fref pref prev next nref lref last post