{"id":348,"date":"2019-05-30T23:46:44","date_gmt":"2019-05-30T20:46:44","guid":{"rendered":"https:\/\/isp-tech.ru\/?page_id=348"},"modified":"2021-12-20T21:50:13","modified_gmt":"2021-12-20T18:50:13","slug":"juniper-ex4500","status":"publish","type":"page","link":"https:\/\/isp-tech.ru\/en\/switch-asic\/juniper-ex4500\/","title":{"rendered":"Juniper EX4500 switches"},"content":{"rendered":"\n<p>Juniper EX4500 series switches  was announced in 2010.<br>Juniper does not disclose exact chip on which the switch is built. However, it was possible to determine by indirect data that this is the Marvell Prestera CX 8248\/8234<\/p>\n\n\n\n<p>You can read ASIC datasheet <a href=\"https:\/\/isp-tech.ru\/data\/asic\/prestera_cx_8248_8234_pb.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a>.<br><a href=\"https:\/\/isp-tech.ru\/data\/juniper\/juniper-EX4500-datasheet.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">View datasheet<\/a> for EX4500<br><a href=\"https:\/\/isp-tech.ru\/data\/juniper\/juniper-ex-mpls-faq.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">MPLS features<\/a> on Juniper EX4500<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li> 960 Gbps switching capacity <\/li><li> Forwarding rate of 714 mpps <\/li><\/ul>\n\n\n\n<p>Juniper EX4500  switches have lot of issues, here is a short list of most important:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li> Issue with buffer lack &#8211; leading to drops when traffic flows from 10g to 1g ports. <\/li><li> MAC hash &#8211; leads to MAC learning issues. <\/li><li> Issues with bandwidth utilization &#8211;  discards at 8-8.5 Gbps. <\/li><\/ul>\n\n\n\n<p>Article about packet buffer tuning on EX4500 can be <a href=\"https:\/\/isp-tech.ru\/juniper-ex4500-output-discards\/\">found here.<\/a>  <\/p>\n\n\n\n<p>Licenses:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-background\" style=\"background-color:#f3f4f5\"><tbody><tr><td>EX-48-AFL <\/td><td>Advanced feature license for IS-IS, BGP, and MPLS <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nngg_shortcode_0_placeholder\n","protected":false},"excerpt":{"rendered":"<p>Juniper EX4500 series switches was announced in 2010.Juniper does not disclose exact chip on which the switch is built. However, it was possible to determine by indirect data that this is the Marvell Prestera CX 8248\/8234 You can read ASIC datasheet here.View datasheet for EX4500MPLS features on Juniper EX4500 960 Gbps switching capacity Forwarding rate\u2026 <span class=\"read-more\"><a href=\"https:\/\/isp-tech.ru\/en\/switch-asic\/juniper-ex4500\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"page-templates\/full-width.php","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-348","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Juniper EX4500 switches series.EX4500-40F- isp-tech.ru<\/title>\n<meta name=\"description\" content=\"Juniper EX4500 switches. Models comparison, licenses, ASIC and architecture. Packet buffer issues and troubleshooting.EX4500-40F\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/isp-tech.ru\/en\/switch-asic\/juniper-ex4500\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/isp-tech.ru\/switch-asic\/juniper-ex4500\/\",\"url\":\"https:\/\/isp-tech.ru\/switch-asic\/juniper-ex4500\/\",\"name\":\"Juniper EX4500 switches series.EX4500-40F- isp-tech.ru\",\"isPartOf\":{\"@id\":\"https:\/\/isp-tech.ru\/#website\"},\"datePublished\":\"2019-05-30T20:46:44+00:00\",\"dateModified\":\"2021-12-20T18:50:13+00:00\",\"description\":\"Juniper EX4500 switches. Models comparison, licenses, ASIC and architecture. 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Models comparison, licenses, ASIC and architecture. Packet buffer issues and troubleshooting.EX4500-40F","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/isp-tech.ru\/en\/switch-asic\/juniper-ex4500\/","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/isp-tech.ru\/switch-asic\/juniper-ex4500\/","url":"https:\/\/isp-tech.ru\/switch-asic\/juniper-ex4500\/","name":"Juniper EX4500 switches series.EX4500-40F- isp-tech.ru","isPartOf":{"@id":"https:\/\/isp-tech.ru\/#website"},"datePublished":"2019-05-30T20:46:44+00:00","dateModified":"2021-12-20T18:50:13+00:00","description":"Juniper EX4500 switches. Models comparison, licenses, ASIC and architecture. 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