{"product_id":"l-sl-4320-app-k9","title":"Cisco L-SL-4320-APP-K9 | AppX License for ISR 4321 | E-Delivery","description":"\u003cdiv class=\"product-desc\"\u003e\n\u003c!-- Section: About This Product --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: bold; color: #1a1a1a; border-bottom: 2px solid #e8e8e8; padding-bottom: 10px; margin: 0 0 16px 0; letter-spacing: 0.01em;\"\u003eAbout This Product\u003c\/h2\u003e\n\u003ch3 style=\"font-size: 14px; font-weight: 600; color: #1a1a1a; margin: 0 0 10px 0;\"\u003eBuy Cisco L-SL-4320-APP-K9 | ISR 4321 Application Experience (AppX) Technology Package License | E-Delivery\u003c\/h3\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0 0 14px 0;\"\u003eThe \u003cstrong\u003eL-SL-4320-APP-K9\u003c\/strong\u003e is a \u003cstrong\u003eCisco ISR 4321 Application Experience (AppX) Technology Package License\u003c\/strong\u003e — the complete application visibility and intelligent path control feature set for the Cisco ISR 4321 Integrated Services Router. This \u003cstrong\u003eCisco ISR 4321 APP license\u003c\/strong\u003e activates NBAR2 deep packet inspection for over 1,400 applications, Application Visibility \u0026amp; Control (AVC), Performance Routing v3 (PfRv3), WAAS Express WAN optimization, and IP SLA, making it the ideal upgrade for mid-size branch and regional hub deployments that require application-aware SD-WAN intelligence with WAN optimization on a single IOS XE platform.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0;\"\u003eAlso referenced as \u003cstrong\u003eSL-4320-APP-K9\u003c\/strong\u003e or \u003cstrong\u003eL-SL-4320-APP-K9=\u003c\/strong\u003e, this \u003cstrong\u003eCisco ISR 4321 AppX license\u003c\/strong\u003e is a perpetual IOS XE Smart License that brings enterprise-grade application intelligence to the ISR 4000 platform. The license enables \u003cstrong\u003eNBAR2 application recognition\u003c\/strong\u003e for granular traffic classification, \u003cstrong\u003eAVC\u003c\/strong\u003e for per-application QoS, bandwidth control, and real-time traffic dashboards, \u003cstrong\u003ePfRv3\u003c\/strong\u003e for intelligent WAN path selection based on real-time performance metrics, \u003cstrong\u003eWAAS Express\u003c\/strong\u003e for TCP optimization, data redundancy elimination, and LZ compression over WAN links, and \u003cstrong\u003eIP SLA\u003c\/strong\u003e for proactive link health monitoring. \u003cstrong\u003eDoes NOT include SEC features\u003c\/strong\u003e — firewall and VPN require a separate SEC license. Whether you are building an SD-WAN edge with application-aware routing or optimizing SaaS performance for a regional hub, the \u003cstrong\u003eISR 4321 APP license e-delivery\u003c\/strong\u003e provides complete application visibility and WAN optimization.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section: Key Features --\u003e\n\u003cdiv style=\"margin-bottom: 32px;\"\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: bold; color: #1a1a1a; border-bottom: 2px solid #e8e8e8; padding-bottom: 10px; margin: 0 0 16px 0; letter-spacing: 0.01em;\"\u003e✅ Key Features\u003c\/h2\u003e\n\u003cul style=\"margin: 0; padding: 0; list-style: none;\"\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003eNBAR2 Deep Packet Inspection\u003c\/strong\u003e — classifies over 1,400 applications including SaaS, web, collaboration, and custom enterprise applications\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003eApplication Visibility \u0026amp; Control (AVC)\u003c\/strong\u003e — per-application QoS policies, bandwidth control, traffic shaping, and real-time monitoring dashboards\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003ePerformance Routing v3 (PfRv3)\u003c\/strong\u003e — intelligent WAN path selection based on real-time metrics: jitter, packet loss, delay, and MOS score\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003eWAAS Express\u003c\/strong\u003e — TCP optimization, data redundancy elimination (DRE), and LZ compression reduce WAN bandwidth consumption by up to 70%\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003eIP SLA\u003c\/strong\u003e — proactive network performance monitoring with synthetic traffic generation for WAN link health measurement and SLA reporting\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003eDoes NOT include SEC features\u003c\/strong\u003e — Zone-Based Firewall and IPsec VPN require separate SEC license; APP covers visibility + optimization only\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f5f5f5; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e \u003cstrong\u003ePerpetual License\u003c\/strong\u003e — one-time purchase,no recurring subscription fees\u003c\/li\u003e\n\u003cli style=\"font-size: 14px; line-height: 1.7; color: #444; padding: 7px 0 7px 20px; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #0070d2; font-weight: bold;\"\u003e•\u003c\/span\u003e Ideal for \u003cstrong\u003emid-size branch SD-WAN, SaaS performance optimization, and application-aware routing\u003c\/strong\u003e on the ISR 4000 platform\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section: Compatible Platform --\u003e\n\u003cdiv style=\"margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: bold; color: #1a1a1a; border-bottom: 2px solid #e8e8e8; padding-bottom: 10px; margin: 0 0 16px 0; letter-spacing: 0.01em;\"\u003eCompatible Platform\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0;\"\u003eThe \u003cstrong\u003eL-SL-4320-APP-K9\u003c\/strong\u003e is exclusively compatible with the \u003cstrong\u003eCisco ISR 4321\u003c\/strong\u003e Integrated Services Router running IOS XE. Requires IOS XE software version 16.x or later with Smart Licensing enabled. \u003cstrong\u003eWAAS Express requires a DRAM upgrade\u003c\/strong\u003e to the maximum supported memory for the ISR 4321. For higher aggregate throughput, add the \u003cstrong\u003eFL-4320-PERF-K9\u003c\/strong\u003e (100 Mbps) and \u003cstrong\u003eFL-4320-BOOST-K9\u003c\/strong\u003e licenses. \u003cstrong\u003eNot compatible\u003c\/strong\u003e with ISR 4221 or other ISR 4000 Series models. Please verify your router model before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section: Information Needed --\u003e\n\u003cdiv style=\"margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: bold; color: #1a1a1a; border-bottom: 2px solid #e8e8e8; padding-bottom: 10px; margin: 0 0 16px 0; letter-spacing: 0.01em;\"\u003eInformation Needed\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0;\"\u003eTo generate your license file, please send the output of \u003ccode style=\"background: #f5f5f5; padding: 2px 6px; border-radius: 3px; font-size: 13px;\"\u003eshow license udi\u003c\/code\u003e from your Cisco ISR 4321 router to \u003cstrong\u003e\u003ca href=\"mailto:support@switchlicense.com\" style=\"color: #0070d2; text-decoration: none;\"\u003esupport@switchlicense.com\u003c\/a\u003e\u003c\/strong\u003e, or leave a message online after placing your order. The license file is tied to your specific device UDI and cannot be transferred to another unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section: License Delivery --\u003e\n\u003cdiv style=\"margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: bold; color: #1a1a1a; border-bottom: 2px solid #e8e8e8; padding-bottom: 10px; margin: 0 0 16px 0; letter-spacing: 0.01em;\"\u003eLicense Delivery\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0;\"\u003eThis \u003cstrong\u003eCisco ISR 4321 Application Experience technology package license\u003c\/strong\u003e is delivered electronically. Once your device UDI is confirmed, we will send you the \u003cstrong\u003elicense entitlement by email\u003c\/strong\u003e. No physical shipment is required .\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0;\"\u003e\u003cstrong\u003eThis license on sale are available exclusively Traditional License.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section: Warranty --\u003e\n\u003cdiv style=\"margin-bottom: 24px;\"\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: bold; color: #1a1a1a; border-bottom: 2px solid #e8e8e8; padding-bottom: 10px; margin: 0 0 16px 0; letter-spacing: 0.01em;\"\u003eWarranty\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.75; color: #444; margin: 0;\"\u003eWe provide a \u003cstrong\u003e100% working warranty\u003c\/strong\u003e on all licenses. If the license does not activate correctly on your device, we will resolve the issue at no additional cost. All payments are processed securely via \u003cstrong\u003ePayPal\u003c\/strong\u003e for your peace of mind.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section: Part Numbers --\u003e\n\u003cdiv style=\"background: #f5f5f5; border-radius: 6px; padding: 14px 18px; font-size: 13px; color: #555; line-height: 1.8;\"\u003e\n\u003cstrong style=\"color: #1a1a1a;\"\u003ePart Numbers:\u003c\/strong\u003e SL-4320-APP-K9  |  L-SL-4320-APP-K9  |  SL-4320-APP-K9=  |  L-SL-4320-APP-K9=\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cisco","offers":[{"title":"Default Title","offer_id":46953917972700,"sku":"L-SL-4320-APP-K9","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/6402\/9916\/files\/L-SL-4320-APP-K9.jpg?v=1776688531","url":"https:\/\/switchlicense.com\/products\/l-sl-4320-app-k9","provider":"Switch License","version":"1.0","type":"link"}