{"id":1320,"date":"2016-07-07T17:22:26","date_gmt":"2016-07-07T17:22:26","guid":{"rendered":"http:\/\/www.mtin.net\/blog\/?p=1320"},"modified":"2016-07-07T17:23:33","modified_gmt":"2016-07-07T17:23:33","slug":"lepa-second-to-be-added-in-2016","status":"publish","type":"post","link":"https:\/\/www.mtin.net\/blog\/lepa-second-to-be-added-in-2016\/","title":{"rendered":"Leap second to be added in 2016"},"content":{"rendered":"<p><a href=\"http:\/\/www.space.com\/33361-leap-second-2016-atomic-clocks.html\">http:\/\/www.space.com\/33361-leap-second-2016-atomic-clocks.html<\/a><\/p>\n<p><em>A &#8220;<a href=\"http:\/\/www.space.com\/29795-leap-second-tonight-atomic-clocks.html\">leap second<\/a>&#8221; will be added to the world&#8217;s official clocks on Dec. 31 at 23 hours, 59 minutes and 59 seconds Coordinated Universal Time (UTC), which corresponds to 6:59:59 p.m. EST; the clocks will read 23:59:60 before ticking over to midnight. The goal is to keep two different timescales in sync with each other.<\/em><\/p>\n<p>So, why is this important to you as an ISP?<br \/>\n<em>The trouble is that even as they use the leap second, UNIX and Linux define a day as something that is unvarying in length. \u201cIf a leap second happens, the operating system must somehow prevent the applications from knowing that it\u2019s going on while still handling all the business of an operating system,\u201d says Steve Allen, a programmer with California\u2019s Lick Observatory.<br \/>\nSource:<a href=\"http:\/\/www.wired.com\/2015\/01\/leap-second-rattle-internet-theres-plot-kill\/\">http:\/\/www.wired.com\/2015\/01\/leap-second-rattle-internet-theres-plot-kill\/<\/a><\/em><\/p>\n<p>Many patches and fixes have been put in place to adjust for this in most Operating systems. \u00a0The concern, even a year after the last one, is software that has not been updated to account for dealing with leap seconds.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>http:\/\/www.space.com\/33361-leap-second-2016-atomic-clocks.html A &#8220;leap second&#8221; will be added to the world&#8217;s official clocks on Dec. 31 at 23 hours, 59 minutes and 59 seconds Coordinated Universal Time (UTC), which corresponds to 6:59:59 p.m. EST; the clocks will read 23:59:60 before ticking over to midnight. The goal is to keep two different timescales in sync with each [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[17,156,2],"tags":[342,344,184,343],"jetpack_publicize_connections":[],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6VLMf-li","jetpack-related-posts":[{"id":2368,"url":"https:\/\/www.mtin.net\/blog\/alg-antenna-test-vs-jirous-dishes\/","url_meta":{"origin":1320,"position":0},"title":"ALG Antenna test vs Jirous dishes","author":"j2sw","date":"August 14, 2018","format":false,"excerpt":"The following are results from a series of tests of AGLcom's parabolic dish antennas on an existing link that is 5.7 miles long. The link typically passes 80-90Mbs with a TX capacity of 140 Mbs and radios used are Ubiquiti AF5X operating at 5218 Mhz.\u00a0 A full PDF with better\u2026","rel":"","context":"In &quot;Tower&quot;","block_context":{"text":"Tower","link":"https:\/\/www.mtin.net\/blog\/category\/tower\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2582,"url":"https:\/\/www.mtin.net\/blog\/wisp-teamwork-to-make-signals-better\/","url_meta":{"origin":1320,"position":1},"title":"WISP Teamwork to make signals better","author":"j2sw","date":"November 14, 2018","format":false,"excerpt":"This post is a huge shout out to Tasos Alexiou\u00a0from RF Elements.\u00a0 This story started out at WISPAPALOOZA Vegas this year.\u00a0 I had a few clients who have been fighting noise issues. While working the Cambium booth we would go over the benefits of ePMP for noise mitigation.\u00a0 This would\u2026","rel":"","context":"In &quot;Cambium&quot;","block_context":{"text":"Cambium","link":"https:\/\/www.mtin.net\/blog\/category\/cambium\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2018\/11\/IMG_0294-e1542168676411.jpg?fit=900%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2018\/11\/IMG_0294-e1542168676411.jpg?fit=900%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2018\/11\/IMG_0294-e1542168676411.jpg?fit=900%2C1200&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":2404,"url":"https:\/\/www.mtin.net\/blog\/from-the-archives-evolution-of-a-network-guy-part-4\/","url_meta":{"origin":1320,"position":2},"title":"From the archives &#8211; Evolution of a network guy part 4","author":"j2sw","date":"August 23, 2018","format":false,"excerpt":"In 2006 I was hired on part-time for Purdue University. My days would consist of mornings on Campus at Purdue doing I.T. support for the Agronomy Department and afternoons, evenings, and weekends doing support and build-outs for NDWave.\u00a0 We were in the mode of dumping everything back into the company\u2026","rel":"","context":"In \"business\"","block_context":{"text":"business","link":"https:\/\/www.mtin.net\/blog\/tag\/business\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2018\/08\/Snake_Eyes_Player_Celebration_EP2-213x300.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2506,"url":"https:\/\/www.mtin.net\/blog\/nist-releases-second-draft-of-guidelines-for-the-selection-configuration-and-use-of-transport-layer-security-tls-implementations\/","url_meta":{"origin":1320,"position":3},"title":"NIST releases second draft of &#8220;Guidelines for the Selection, Configuration, and Use of Transport Layer Security (TLS) Implementations.&#8221;","author":"j2sw","date":"October 15, 2018","format":false,"excerpt":"From an e-mail the folks at nist sent out. NIST has released a second draft of NIST Special Publication (SP) 800-52 Revision 2,Guidelines for the Selection, Configuration, and Use of Transport Layer Security (TLS) Implementations. It provides guidance for selecting and configuring TLS protocol implementations that utilize NIST-recommended cryptographic algorithms\u2026","rel":"","context":"In &quot;Security&quot;","block_context":{"text":"Security","link":"https:\/\/www.mtin.net\/blog\/category\/security\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2121,"url":"https:\/\/www.mtin.net\/blog\/making-space-on-cisco-nexus-switches-when-you-are-out\/","url_meta":{"origin":1320,"position":4},"title":"Making space on Cisco Nexus switches when you are out","author":"j2sw","date":"April 13, 2019","format":false,"excerpt":"One of our switches had a space issue on the file system and would not take an upgrade.\u00a0 I did not have any leftover images from previous upgrades on the file system taking up unneeded\u00a0space.\u00a0 I figured there had to be a log file or something.\u00a0 Some commands to help\u2026","rel":"","context":"In &quot;cisco&quot;","block_context":{"text":"cisco","link":"https:\/\/www.mtin.net\/blog\/category\/cisco\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2837,"url":"https:\/\/www.mtin.net\/blog\/baicells-public-ips-on-client-routers\/","url_meta":{"origin":1320,"position":5},"title":"Baicells: Public IPs on client routers","author":"j2sw","date":"February 7, 2019","format":false,"excerpt":"Public IPs on Baicells Client Routers. I needed to Provide a few customers with Public IPs while most of the UEs and clients got private IP. The following is what I did to allow this to work: Requirements: EnodeB in Bridge mode UE in NAT mode MikroTik Router with DHCP\u2026","rel":"","context":"In &quot;Wireless&quot;","block_context":{"text":"Wireless","link":"https:\/\/www.mtin.net\/blog\/category\/wireless\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.mtin.net\/blog\/wp-content\/uploads\/2017\/05\/17821343_1510820508928612_1776831623_n.jpg?fit=405%2C720&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts\/1320"}],"collection":[{"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/comments?post=1320"}],"version-history":[{"count":2,"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts\/1320\/revisions"}],"predecessor-version":[{"id":1322,"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/posts\/1320\/revisions\/1322"}],"wp:attachment":[{"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/media?parent=1320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/categories?post=1320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mtin.net\/blog\/wp-json\/wp\/v2\/tags?post=1320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}