[atlas] Request to test TCP and UDP to the root servers separately.

In a message written on Sat, Feb 25, 2012 at 10:49:04AM +0100, Philip Homburg wrote:
> On 2/24/12 21:41 , Leo Bicknell wrote:
> >Would it be of interest to the Atlas community to have the probes
> >try and query "." via both UDP and TDP from each of the 13 root
> >servers (perhaps v4 and v6 separately), report back that data, and
> >then generate a report on the results?  I would be happy to assist
> >in preparing or presenting a report on the results!
> >
> The probes are already measuring this. I don't think we made any graphs 
> of the results.

I'm not sure a graph would be the best representation of this data.  The
interesting questions to me are:

- Compare Failure Levels
  - What is the overall level of UDP failure?
  - What is the overall level of UDP+EDNS0 failure?
  - What is the overall level of TCP failure?
- Exploring the differences in the ecosystem
  - Is there a statistical difference in the failure rate between IPv4 and
    IPv6?  (Are we getting better or worse)
  - Is there a statistical difference in the failure rate between two
    different root servers?  (Does the root server deployment model
    matter)
  - What is the difference in response time of TCP queries compared to UDP
    queries? (What's the penalty to fall back to TCP)

-- 
       Leo Bicknell - bicknell at ufp.org - CCIE 3440
        PGP keys at http://www.ufp.org/~bicknell/
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