{"id":22430,"date":"2025-07-16T11:30:06","date_gmt":"2025-07-16T09:30:06","guid":{"rendered":"https:\/\/blog.rwth-aachen.de\/itc\/?p=22430"},"modified":"2025-08-13T15:14:38","modified_gmt":"2025-08-13T13:14:38","slug":"x-win-migration-abgeschlossen","status":"publish","type":"post","link":"https:\/\/blog.rwth-aachen.de\/itc\/en\/2025\/07\/16\/x-win-migration-abgeschlossen\/","title":{"rendered":"Successful Renewal of RWTH&#8217;s Central Internet Access Routers: X-WiN Migration Completed"},"content":{"rendered":"<div class=\"twoclick_social_bookmarks_post_22430 social_share_privacy clearfix 1.6.4 locale-en_US sprite-en_US\"><\/div><div class=\"twoclick-js\"><script type=\"text\/javascript\">\/* <![CDATA[ *\/\njQuery(document).ready(function($){if($('.twoclick_social_bookmarks_post_22430')){$('.twoclick_social_bookmarks_post_22430').socialSharePrivacy({\"txt_help\":\"Wenn Sie diese Felder durch einen Klick aktivieren, werden Informationen an Facebook, Twitter, Flattr, Xing, t3n, LinkedIn, Pinterest oder Google eventuell ins Ausland \\u00fcbertragen und unter Umst\\u00e4nden auch dort gespeichert. N\\u00e4heres erfahren Sie durch einen Klick auf das <em>i<\\\/em>.\",\"settings_perma\":\"Dauerhaft aktivieren und Daten\\u00fcber-tragung zustimmen:\",\"info_link\":\"http:\\\/\\\/www.heise.de\\\/ct\\\/artikel\\\/2-Klicks-fuer-mehr-Datenschutz-1333879.html\",\"uri\":\"https:\\\/\\\/blog.rwth-aachen.de\\\/itc\\\/en\\\/2025\\\/07\\\/16\\\/x-win-migration-abgeschlossen\\\/\",\"post_id\":22430,\"post_title_referrer_track\":\"Successful+Renewal+of+RWTH%26%238217%3Bs+Central+Internet+Access+Routers%3A+X-WiN+Migration+Completed\",\"display_infobox\":\"on\"});}});\n\/* ]]> *\/<\/script><\/div><p>On Tuesday evening, June 10, 2025, the time had come: In a planned and precisely executed maintenance window between 9 and 10pm, the heart of the RWTH network infrastructure was modernised &#8211; the migration to the new Catalyst 9600 router generation was successfully completed!<\/p>\n<div id=\"attachment_22680\" style=\"width: 310px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-22680\" class=\"size-medium wp-image-22680\" src=\"https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/X-win-Umstellung_bearbeitet-1-300x185.png\" alt=\"\" width=\"300\" height=\"185\" srcset=\"https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/X-win-Umstellung_bearbeitet-1-300x185.png 300w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/X-win-Umstellung_bearbeitet-1-1024x630.png 1024w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/X-win-Umstellung_bearbeitet-1-768x473.png 768w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/X-win-Umstellung_bearbeitet-1-1536x946.png 1536w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/X-win-Umstellung_bearbeitet-1-2048x1261.png 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-22680\" class=\"wp-caption-text\">Source: Own illustration<\/p><\/div>\n<p><!--more--><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #00549f;\">Powerful Architecture<\/span><\/h3>\n<p>As part of the X-WiN migration, routing was switched from the previous Nexus 7700 series access routers to the new, more powerful Catalyst 9600 architecture. These routers are central hubs for all data traffic &#8211; everything that enters or leaves the RWTH network happens right here.<\/p>\n<p>Despite the complexity of this measure &#8211; partly due to a completely new operating system and necessary reconfigurations &#8211; the IT Center managed to implement the changeover during ongoing operations and limit the planned downtime to one hour.<\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #00549f;\">What Effects Did the Changeover Have?<\/span><\/h3>\n<div id=\"attachment_22456\" style=\"width: 310px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-22456\" class=\"size-medium wp-image-22456\" src=\"https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/Blog-Layout-1-2-300x200.png\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/Blog-Layout-1-2-300x200.png 300w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/Blog-Layout-1-2-1024x683.png 1024w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/Blog-Layout-1-2-768x512.png 768w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/Blog-Layout-1-2-1536x1024.png 1536w, https:\/\/blog.rwth-aachen.de\/itc\/files\/2025\/07\/Blog-Layout-1-2-2048x1365.png 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-22456\" class=\"wp-caption-text\">Source: Own illustration<\/p><\/div>\n<p>As announced, the central services such as VPN, e-mail, RWTHonline and RWTHmoodle as well as some internal systems (e.g. DNS service) were briefly unavailable during the maintenance period. However, all systems were fully online again shortly after 10 pm &#8211; a smooth process without a roll-back.<\/p>\n<p>Our colleagues from the Networks department \u2013 <a href=\"https:\/\/www.itc.rwth-aachen.de\/cms\/it-center\/it-center\/profil\/team\/~epvp\/mitarbeiter-campus-\/?gguid=PER-EB7A3US&amp;allou=1\">Benedikt Paffen<\/a>, <a href=\"https:\/\/www.itc.rwth-aachen.de\/cms\/it-center\/it-center\/profil\/team\/~epvp\/mitarbeiter-campus-\/?gguid=PER-6AYL3GF&amp;allou=1\">Christoph Viethen<\/a>, <a href=\"https:\/\/www.itc.rwth-aachen.de\/cms\/it-center\/it-center\/profil\/team\/~epvp\/mitarbeiter-campus-\/?gguid=PER-KG3RV39&amp;allou=1\">Robin Westarp<\/a> and <a href=\"https:\/\/www.itc.rwth-aachen.de\/cms\/it-center\/it-center\/profil\/team\/~epvp\/mitarbeiter-campus-\/?gguid=PER-H2FTH4Z&amp;allou=1\">Nils Neumann<\/a> \u00a0&#8211; worked under high pressure to ensure that everything ran smoothly and successfully. The team was supported by the IT-ServiceDesk on-call team, represented by <a href=\"https:\/\/www.itc.rwth-aachen.de\/cms\/it-center\/it-center\/profil\/team\/~epvp\/mitarbeiter-campus-\/?gguid=PER-XXDV8TJ&amp;allou=1\">Sarah Grzemski<\/a>. A team effort &#8211; the realisation was outstanding and shows once again what is possible with good cooperation.<\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #00549f;\">Why Was This Changeover Necessary?<\/span><\/h3>\n<p>By switching to the Catalyst 9600, RWTH Aachen University is setting new standards in its network infrastructure:<\/p>\n<ul>\n<li>More performance &amp; stability: faster fault detection and greater reliability<\/li>\n<li>Future-proof: state-of-the-art technology for future requirements<\/li>\n<li>Sustainability: reduced energy consumption despite higher performance<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #00549f;\">What Does This Mean for the Future?<\/span><\/h3>\n<p>The successful migration is an important milestone in the ongoing development of RWTH&#8217;s digital infrastructure. It lays the foundation for even faster, more stable and more sustainable networks &#8211; despite the growing demand for online services and digital teaching.<\/p>\n<p>A big thank you to everyone involved for making this smooth and successful transition possible!<\/p>\n<p>Stay tuned &#8211; in upcoming posts you will learn more about the amazing technology behind it and how the so-called &#8220;change management&#8221; at the IT Center works.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p>Responsible for the content of this article is <a href=\"https:\/\/www.itc.rwth-aachen.de\/cms\/it-center\/it-center\/profil\/team\/~epvp\/mitarbeiter-campus-\/?gguid=PER-3UACJPP&amp;allou=1\">Merrit Mielke<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Sorry, this entry is only available in Deutsch.<\/p>\n","protected":false},"author":5003,"featured_media":22455,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"c2c_always_allow_admin_comments":false,"footnotes":""},"categories":[306,308,311,312,316,315,310],"tags":[1498,356,1042,1499],"class_list":["post-22430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ankuendigungen","category-events-jubilaen-erfolge","category-fun-facts","category-insight-it-center","category-projekte-kooperationen","category-services-support","category-studium-lehre","tag-change-management","tag-migration","tag-netzwerk","tag-x-win"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"Am 10.06. war es so weit: In einem pr\u00e4zise durchgef\u00fchrten Wartungsfenster ist die Migration auf die Router-Generation Catalyst 9600 erfolgreich abgeschlossen!\" \/>\n\t<meta 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