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<p class="MsoNormal"><span style="layout-grid-mode:line">Dear RSSAC Caucus, <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="layout-grid-mode:line"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-top:6.0pt"><span style="color:black">The RSSAC wishes to investigate best practices to optimize the distribution of root server instances in order to maximize root service resiliency, and to reduce the Round-Trip Time (RTT)
between recursive servers and root servers. It requests Kaveh Ranjbar to lead a Caucus work party to produce a report, with adherence to RSSAC Caucus procedures.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:black">The work party is asked to consider a number of issues related to the distribution of anycast instances of the root name service, including:</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1;vertical-align:baseline">
Given the state of current internet technology, what is the maximum latency a relying party should experience when transacting with the DNS root service as opposed to with a single “root server?”
<o:p></o:p></li><li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1;vertical-align:baseline">
Will adding more instances in more topologically diverse locations make the system more resilient to Denial Of Service (DOS) attacks?<o:p></o:p></li><li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1;vertical-align:baseline">
If root operators were to coordinate their deployments of anycast instances, what considerations should be contemplated?<o:p></o:p></li><li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1;vertical-align:baseline">
Are there any regional or global technological risks (or benefits) if only a subset of operators (versus all or the majority of root operators) deploy anycast instances?<o:p></o:p></li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="layout-grid-mode:line"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="layout-grid-mode:line"> If you are interested in this topic and would like to join this work party, please email Kathy Schnitt
<a href="mailto:kathy.schnitt@icann.org">kathy.schnitt@icann.org</a> by close of business
<b>19 October 2016. <o:p></o:p></b></span></p>
<p class="MsoNormal"><b><span style="layout-grid-mode:line"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><span style="layout-grid-mode:line">Best<o:p></o:p></span></p>
<p class="MsoNormal"><span style="layout-grid-mode:line">Steve<o:p></o:p></span></p>
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