{"id":2129,"date":"2024-07-26T09:36:58","date_gmt":"2024-07-26T16:36:58","guid":{"rendered":"https:\/\/ant.isi.edu\/blog\/?p=2129"},"modified":"2024-07-26T09:36:58","modified_gmt":"2024-07-26T16:36:58","slug":"new-technical-report-reasoning-about-internet-connectivity","status":"publish","type":"post","link":"https:\/\/ant.isi.edu\/blog\/?p=2129","title":{"rendered":"new technical report &#8220;Reasoning about Internet Connectivity&#8221;"},"content":{"rendered":"\n<p>We have released a new technical report: &#8220;Reasoning about Internet Connectivity&#8221;, available at <a href=\"https:\/\/arxiv.org\/abs\/2407.14427\">https:\/\/arxiv.org\/abs\/2407.14427<\/a>.<\/p>\n\n\n\n<p>From the abstract:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-medium\"><a href=\"https:\/\/ant.isi.edu\/blog\/wp-content\/uploads\/2024\/07\/Baltra24b_icon.png\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"78\" src=\"https:\/\/ant.isi.edu\/blog\/wp-content\/uploads\/2024\/07\/Baltra24b_icon-300x78.png\" alt=\"Figure 1 from [Baltra24b], showing the connected core (A, B and C) with B and C peninsulas, D and E islands, and X an outage.\" class=\"wp-image-2131\" srcset=\"https:\/\/ant.isi.edu\/blog\/wp-content\/uploads\/2024\/07\/Baltra24b_icon-300x78.png 300w, https:\/\/ant.isi.edu\/blog\/wp-content\/uploads\/2024\/07\/Baltra24b_icon.png 650w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n<\/div>\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Innovation in the Internet requires a global <em>Internet core<\/em> to enable<br \/>communication between users in ISPs and services in the cloud. Today, this Internet core is challenged by <em>partial reachability<\/em>: political pressure<br \/>threatens fragmentation by nationality, architectural changes such as<br \/>carrier-grade NAT make connectivity conditional, and operational problems and commercial disputes make reachability incomplete for months. We assert that <em>partial reachability is a fundamental part of the Internet core<\/em>. While some systems paper over partial reachability, this paper is the first to <em>provide a conceptual definition of the Internet core<\/em><br \/>so we can reason about reachability from first principles. Following<br \/>the Internet design, our definition is guided by reachability, not<br \/>authority. Its corollaries are <em>peninsulas<\/em>: persistent regions of<br \/>partial connectivity; and <em>islands<\/em>: when networks are partitioned<br \/>from the Internet core. We show that the concept of <em>peninsulas and islands can improve existing measurement systems<\/em>. In one example,<br \/>they show that RIPE&#8217;s DNSmon suffers misconfiguration and persistent<br \/>network problems that are important, but risk obscuring operationally<br \/>important connectivity changes because they are 5x to 9.7x larger. Our evaluation also informs policy questions, showing no single<br \/>country or organization can unilaterally control the Internet core.<\/p>\n<\/blockquote>\n\n\n\n<p>This technical report is joint work of Guillermo Baltra, Tarang Saluja, Yuri Pradkin, John Heidemann done at USC\/ISI.  This work was supported by the NSF via the <a href=\"https:\/\/ant.isi.edu\/eieio\/\">EIEIO<\/a> and <a href=\"https:\/\/ant.isi.edu\/internetmap\/\">InternetMap<\/a> projects.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We have released a new technical report: &#8220;Reasoning about Internet Connectivity&#8221;, available at https:\/\/arxiv.org\/abs\/2407.14427. From the abstract: Innovation in the Internet requires a global Internet core to enablecommunication between users in ISPs and services in the cloud. Today, this Internet core is challenged by partial reachability: political pressurethreatens fragmentation by nationality, architectural changes such ascarrier-grade [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[32,58,355,22,44,5,354,390,315,57],"class_list":["post-2129","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-internet-topology","tag-isi","tag-islands","tag-measurement-systems","tag-outage-detection","tag-papers","tag-partial-connectivity","tag-peninsulas","tag-technical-report","tag-usc"],"_links":{"self":[{"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2129"}],"version-history":[{"count":1,"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2129\/revisions"}],"predecessor-version":[{"id":2132,"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2129\/revisions\/2132"}],"wp:attachment":[{"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ant.isi.edu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}