[rssac-caucus] FOR REVIEW: DRAFT RSSAC Report on Root zone TTLs

[Steve Sheng]

Dear RSSAC Caucus, 

   On behalf of the caucus work party on Root Zone TTLs, attached please
find for your review the draft RSSAC Report on Root zone TTLs. The work
party is chaired by Duane Wessels, work party members include Joe Abley,
Jaap Akkerhuis, John Bond, Brian Dickson, Shumon Huque, Warren Kumari, Duane
Wessels (work party leader) and Matthew Thomas (invited expert). Staff
support are: Steve Sheng, Barbara Roseman and Kathy Schnitt.

   Root zone TTLs have not changed since 1999.  In this report, the RSSAC
caucus studies the extent to which the current root zone TTLs are still
appropriate for today¹s internet environment. The report contains a number
of findings and recommendations through four sets of empirical analyses. The
work party chair invites you to give this report a careful review.

     One thing the chair wish to highlight is that the work party discovered
two potential problems related to the interaction between the SOA Expire
value and the root zone¹s signature validity period. It also identified
several mitigation options, and conducted a preliminary analysis of these
options. However, the work party has yet to reach a conclusion to recommend
which measure to take. It would be good to hear some feedback from the
Caucus. Short of more definitive feedback from the Caucus, the work party
will recommend further consultation in this area.

    The work party chair requests you provide your review by close of
business (anywhere around the world)  15 June 2015, if possible. This will
allow the work party time to discuss and finalize the document in time for
RSSAC consideration in Buenos Aires.

All the best, 
Steve




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