{"id":16810,"date":"2024-03-11T08:09:02","date_gmt":"2024-03-11T08:09:02","guid":{"rendered":"https:\/\/grnet.gr\/?page_id=16810"},"modified":"2025-09-05T17:41:32","modified_gmt":"2025-09-05T14:41:32","slug":"network-and-topology","status":"publish","type":"page","link":"https:\/\/grnet.gr\/en\/infrastructures\/network-and-topology\/","title":{"rendered":"Network and topology"},"content":{"rendered":"<p><div class=\"wrapper  \" style=\"\" >\n\t\t\t\t<div class=\"row \"><div class=\"col-xs-12 col-sm-12 col-md-12 col-lg-12\"><div class='blox_element tt_text_content  '>\n<p>GRNET has acquired under a long-term contract \u201cdark\u201d optical fiber (dark fiber).<\/p>\n<p>In such network the following are implemented:<\/p>\n<ul>\n<li>Broadband (WAN) connections<\/li>\n<li>metropolitan (MAN) connections, and<\/li>\n<li>Organization connections.<\/li>\n<\/ul><\/div><div class=\"wrapper  \" style=\"\" >\n\t\t\t\t<div class=\"row \"><div class=\"col-xs-12 col-xxs-4 col-sm-4 col-md-4 col-lg-4\"><div class=\"blox_element blox_elem_image_frame blox_elem_image_frame_colored blox_elem_image_frame_caption_image  \" style=\"background-color: ;\">\r\n\t\t\t\t\t<div class=\"blox_elem_image_frame_border\">\r\n\t\t\t\t\t\t<a class=\"algin-left clearfix\" href=\"https:\/\/grnet.gr\/wp-content\/uploads\/2025\/09\/\u03a4\u03bf\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u0301\u03b1-\u039f\u03c0\u03c4\u03b9\u03ba\u03bf\u03c5\u0301-\u0394\u03b9\u03ba\u03c4\u03c5\u0301\u03bf\u03c5-GRNET1.png\" rel=\"prettyPhoto\" target=\"_self\">\r\n\t\t\t\t\t\t\t<div class=\"blox_elem_image_frame_hover\">\r\n\t\t\t\t\t\t\t\t<i class=\"icon-picture\"><\/i>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/grnet.gr\/wp-content\/uploads\/2025\/09\/\u03a4\u03bf\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u0301\u03b1-\u039f\u03c0\u03c4\u03b9\u03ba\u03bf\u03c5\u0301-\u0394\u03b9\u03ba\u03c4\u03c5\u0301\u03bf\u03c5-GRNET1.png\" alt=\"Image\" class=\"frame\"\/>\r\n\t\t\t\t\t\t\t\t<p class=\"blox_elem_caption_text\"><\/p>\r\n\t\t\t\t\t\t<\/a>\r\n\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div><\/div><div class=\"col-xs-12 col-sm-12 col-md-8 col-lg-8\"><div class='blox_element tt_text_content  '>\n<p>The optical fibers have been acquired under long-term contracts that secure specific damage recovery times, an annual availability of \u2265 99%, as well as specific fiber-related data (CD, PMD, attenuation).<\/p>\n<p>The topography of the fiber optics (footprint) at a country level are presented in the map here below.<\/p><\/div><\/div><\/div>\n\t\t\t<\/div><div class='blox_element tt_text_content  '>\n<p>GRNET\u2019s long-term leased fibers are used to provide physical-level interconnection services. These services are provided either directly over the &#8220;dark&#8221; optical fibers, or multiplexed through GRNET\u2019s DWDM equipment. The above diagram shows the topology of the optical fibers per link as well as the points where the optical equipment is installed.<\/p><\/div><\/div><\/div>\n\t\t\t<\/div><div class=\"blox_row_fullwidth dark nopaddings\" style=\"background-color: #eaeaea;\" >\n\t\t\t\t\t<div class=\"container\">\n\t\t\t\t\t\t<div class=\"wrapper\">\n\t\t\t\t\t\t\t<div class=\"row \"><div class=\"col-xs-12 col-sm-12 col-md-12 col-lg-12\"><div class='blox_element tt_text_content  h3'>\n<h4><strong><span style=\"color: #e27d24;\"> Network topology <\/span><\/strong><\/h4><\/div><div class='blox_element tt_text_content  '>\n<h2 class=\"h2upper\"><\/h2>\n<h4><span style=\"color: #e27d24;\">Full Topology and concise \u201cmetromap\u201d<\/span><\/h4><\/div><\/div><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><div class=\"blox_row_fullwidth dark nopaddings\" style=\"background-color: #eaeaea;\" >\n\t\t\t\t\t<div class=\"container\">\n\t\t\t\t\t\t<div class=\"wrapper\">\n\t\t\t\t\t\t\t<div class=\"row \"><div class=\"col-xs-12 col-xxs-6 col-sm-6 col-md-6 col-lg-6\"><div class=\"blox_element blox_elem_image_frame blox_elem_image_frame_colored blox_elem_image_frame_caption_image  \" style=\"background-color: ;\">\r\n\t\t\t\t\t<div class=\"blox_elem_image_frame_border\">\r\n\t\t\t\t\t\t<a class=\"algin-left clearfix\" href=\"https:\/\/grnet.gr\/wp-content\/uploads\/2022\/10\/\u03a4\u03bf\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u0301\u03b1-\u0394\u03b9\u03ba\u03c4\u03c5\u0301\u03bf\u03c5-\u0395\u0394\u0395\u03a44-2019.11.11-scaled.jpg\" rel=\"prettyPhoto\" target=\"_self\">\r\n\t\t\t\t\t\t\t<div class=\"blox_elem_image_frame_hover\">\r\n\t\t\t\t\t\t\t\t<i class=\"icon-picture\"><\/i>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/grnet.gr\/wp-content\/uploads\/2022\/10\/\u03a4\u03bf\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u0301\u03b1-\u0394\u03b9\u03ba\u03c4\u03c5\u0301\u03bf\u03c5-\u0395\u0394\u0395\u03a44-2019.11.11-scaled.jpg\" alt=\"Image\" class=\"frame\"\/>\r\n\t\t\t\t\t\t\t\t<p class=\"blox_elem_caption_text\">\u03a0\u03bb\u03ae\u03c1\u03b7\u03c2 \u03a4\u03bf\u03c0\u03bf\u03bb\u03bf\u03b3\u03af\u03b1<\/p>\r\n\t\t\t\t\t\t<\/a>\r\n\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div><\/div><div class=\"col-xs-12 col-xxs-6 col-sm-6 col-md-6 col-lg-6\"><div class=\"blox_element blox_elem_image_frame blox_elem_image_frame_colored blox_elem_image_frame_caption_image  \" style=\"background-color: ;\">\r\n\t\t\t\t\t<div class=\"blox_elem_image_frame_border\">\r\n\t\t\t\t\t\t<a class=\"algin-left clearfix\" href=\"https:\/\/grnet.gr\/wp-content\/uploads\/sites\/13\/2015\/07\/GRNET4-metromap-20160518.png\" rel=\"prettyPhoto\" target=\"_self\">\r\n\t\t\t\t\t\t\t<div class=\"blox_elem_image_frame_hover\">\r\n\t\t\t\t\t\t\t\t<i class=\"icon-picture\"><\/i>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/grnet.gr\/wp-content\/uploads\/sites\/13\/2015\/07\/GRNET4-metromap-20160518.png\" alt=\"Image\" class=\"frame\"\/>\r\n\t\t\t\t\t\t\t\t<p class=\"blox_elem_caption_text\">\u03a3\u03c5\u03bd\u03b5\u03c0\u03c4\u03c5\u03b3\u03bc\u03ad\u03bd\u03b7 \u03c4\u03bf\u03c0\u03bf\u03bb\u03bf\u03b3\u03af\u03b1 \u201cmetromap\u201d<\/p>\r\n\t\t\t\t\t\t<\/a>\r\n\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div><\/div><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":16805,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-16810","page","type-page","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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