IP Fragmentation - Not reliable over the Internet?

Tue Aug 27 08:45:25 UTC 2013

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 at ytti.fi ~]% ssh ring ring-all -t90 ping -s 1473 -c2 -w3 ip.fi|pastebinit
> http://p.ip.fi/KA7N
> 
> [ytti at sci ~]% curl -s http://p.ip.fi/KA7N|grep transmitted|wc -l
> 224
> [ytti at 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