{"id":86215,"date":"2026-09-08T17:00:34","date_gmt":"2026-09-08T17:00:34","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4451-x-ax-k9-cisco-4451-x-application\/"},"modified":"2026-09-08T17:01:00","modified_gmt":"2026-09-08T17:01:00","slug":"refurbished-isr4451-x-ax-k9-cisco-4451-x-application","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4451-x-ax-k9-cisco-4451-x-application\/","title":{"rendered":"Refurbished ISR4451-X-AX\/K9, Cisco 4451-X Application"},"content":{"rendered":"<p>Refurbished ISR4451-X-AX\/K9 Technical Specifications<\/p>\n<p>Cisco 4451-X Application Experience Router Modular<\/p>\n<p>General Information:<\/p>\n<p>Manufacturer Cisco Systems, Inc<\/p>\n<p>Manufacturer Part Number ISR4451-X-AX\/K9<\/p>\n<p>Brand Name Cisco<\/p>\n<p>Product Line Cisco ISR<\/p>\n<p>Product Series Cisco ISR 4000<\/p>\n<p>Product Model ISR4451<\/p>\n<p>Ethernet Technology: Gigabit Ethernet<\/p>\n<p>Product Name 4451-X Router<\/p>\n<p>Product Type Router<\/p>\n<p>Interfaces\/Ports<\/p>\n<p>Total Number of Ports 4<\/p>\n<p>USB Yes<\/p>\n<p>Powerline No<\/p>\n<p>Management Port Yes<\/p>\n<p>Token Ring Port No<\/p>\n<p>Serial V.35 Interface No<\/p>\n<p>Number of Network (RJ-45) Ports 4<\/p>\n<p>I\/O Expansions<\/p>\n<p>Number of Total Expansion Slots 10<\/p>\n<p>Expansion Slot Type Network Interface Module (NIM)<\/p>\n<p>Expansion Slot Type PVDM<\/p>\n<p>Expansion Slot Type SFP<\/p>\n<p>Expansion Slot Type Integrated Services Card (ISC)<\/p>\n<p>Network &#038; Communication<\/p>\n<p>Network Technology 10\/100\/1000Base-T<\/p>\n<p>Ethernet Technology Gigabit Ethernet<\/p>\n<p>Management &#038; Protocols<\/p>\n<p>Security Features-<\/p>\n<p>IPsec<\/p>\n<p>VPN<\/p>\n<p>SSL<\/p>\n<p>Advanced Application Inspection<\/p>\n<p>Application Control<\/p>\n<p>SSH<\/p>\n<p>NAC<\/p>\n<p>Voice and Video Enabled VPN<\/p>\n<p>Group Encrypted Transport (GET)<\/p>\n<p>Flex VPN<\/p>\n<p>Cisco IOS XE Software-based Traffic Control<\/p>\n<p>NBAR<\/p>\n<p>AAA<\/p>\n<p>PKI<\/p>\n<p>ACL<\/p>\n<p>Memory<\/p>\n<p>Standard Memory 4 GB<\/p>\n<p>Maximum Memory 16 GB<\/p>\n<p>Memory Technology DRAM<\/p>\n<p>Flash Memory 8 GB<\/p>\n<p>Power Description<\/p>\n<p>Input Voltage 120 V AC<\/p>\n<p>Input Voltage 230 V AC<\/p>\n<p>Power Source Power Supply<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Refurbished ISR4451-X-AX\/K9 Overview<\/p>\n<p>ISR4451-X-AX\/K9 integrated router combines high-performance, scalability, Data Center features and smart router is made to run multiple services. This is the only router in industry separates control data and services planes, so the benefits are numerous. With pay-as-you-grow performance, you can increase forwarding capacity when needed, you only pay for the performance you need. The ISR4451-X-AX\/K9 runs multi-core, multi-threaded advanced secruity IOS-XE operating system to enable both WAN link security and MPLS and OTV services. Full featured WAN optimization with that run native on the motherboard without affecting performance, management and other capabilities. According to the scalability, ISR 4451 designed as a layer 7 router basically, the advanced network services enable the branch to utilize the WAN intelligently is really what ISR 4400 series all about.The Cisco ISR 4451 is the ultimate application delivery platform to mid-size or even large branch offices. This is literally routing redefined.<\/p>\n","protected":false},"featured_media":86216,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[255],"product_cat":[691,347,626],"product_tag":[1036,1037,677,628,1052,1034],"class_list":["post-86215","product","type-product","status-publish","has-post-thumbnail","product_brand-cisco","product_cat-cisco-refurbished-routers","product_cat-refurbished","product_cat-refurbished-routers","product_tag-cisco-isr","product_tag-cisco-isr-4000-series","product_tag-gigabit-ethernet-servers","product_tag-router","product_tag-sfp-router","product_tag-vpn-router","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Refurbished ISR4451-X-AX\/K9, Cisco 4451-X Application - Geek Tech Sol<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4451-x-ax-k9-cisco-4451-x-application\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Refurbished ISR4451-X-AX\/K9, Cisco 4451-X Application - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"Refurbished ISR4451-X-AX\/K9 Overview ISR4451-X-AX\/K9 integrated router combines high-performance, scalability, Data Center features and smart router is made to run multiple services. 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