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FL-4220-BOOST-K9
Booster Performance License for Cisco 4220 Series Routers
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The FL-4220-BOOST-K9 Cisco FirePOWER 4220 Throughput Upgrade License boosts the performance capacity of the Cisco FirePOWER 4220 Next-Generation Firewall (NGFW), unlocking higher throughput and security inspection capabilities. This upgrade allows organizations to scale firewall performance as traffic demands grow without hardware replacement.
Designed for enterprise and data-center environments, this license increases system throughput and inspection limits for both firewall and intrusion prevention (NGIPS) functions. It ensures consistent protection, faster traffic handling, and higher encrypted throughput across mission-critical networks.
Delivered via Electronic Software Delivery (ESD), the FL-4220-BOOST-K9 license activates instantly through secure online registration. It is an OEM perpetual license, providing lifetime validity, continuous software compatibility, and full support through Cisco SMARTnet and FirePOWER Management Center (FMC) platforms.
Built for high-performance enterprises, cloud providers, and service environments, this license enables scalable network protection and ensures that Cisco FirePOWER 4220 appliances deliver full performance potential.
The FL-4220-BOOST-K9 license is specifically designed for Cisco FirePOWER 4220 Series appliances, enabling advanced performance scaling and throughput optimization.
Supported Hardware Model:
Supported Software & Environments:
The Cisco FL-4220-BOOST-K9 License provides a powerful and efficient way to scale firewall performance, ensuring that your Cisco FirePOWER 4220 appliance operates at maximum capacity with consistent security, speed, and reliability.
FL-4220-BOOST-K9 price is $400.00, a 83.1% saving from the Cisco list price of $2,360.00. FL-4220-BOOST-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for FL-4220-BOOST-K9 for additional pricing. Browse the full Cisco Isr 4000 Licenses series or explore all Cisco products.
In a multinational enterprise with dozens of satellite offices, enabling real-time collaboration tools and cloud-based ERP requires sustained WAN throughput above the base 1 Gbps capacity of the Cisco 4220. By applying the FL-4220-BOOST-K9 Booster Performance License, IT teams unlock up to 3.5 Gbps of routing performance, reducing application latency by 40% and ensuring consistent video conferencing, VoIP and SaaS responsiveness at remote sites.
A global retailer must securely connect point-of-sale systems and inventory databases across AWS, Azure and on-premises data centers without introducing bandwidth constraints. The FL-4220-BOOST-K9 License amplifies the Cisco 4220’s IPsec encryption throughput to over 2 Gbps, offloading CPU overhead and maintaining end-to-end SLA compliance. The outcome is a scalable, high-performance SD-WAN fabric that accelerates cloud migration and protects sensitive payment data.
A managed service provider hosts multiple small business tenants on a single Cisco 4220 platform but requires granular traffic shaping and guaranteed throughput per customer. With the FL-4220-BOOST-K9 Booster Performance License, the router delivers advanced QoS and up to 3.5 Gbps aggregate throughput, enabling per-tenant SLAs of 500 Mbps or higher. This boosts customer satisfaction, simplifies network operations and supports premium service tiers without additional hardware.
To get the detailed certification, please go to the Compliance Center.
 FL-4220-BOOST-K9 |  SL-4220-APP-K9= |  SL-4350-APP-K9 |  L-SL-44-APP-K9= |  L-SL-4320-APP-K9= | |
|---|---|---|---|---|---|
| Activation Type | Online Activation | Online Activation | Online Activation | Online Activation | Online Activation |
| Bit Version | N/A | N/A | N/A | N/A | N/A |
| Cloud Integration | N/A | N/A | N/A | N/A | N/A |
| Compliance Certifications | N/A | N/A | N/A | N/A | N/A |
| Delivery Method | Digital Key | Digital Key | License Certificate | Digital Key | Digital Key |
| Device Count | 1 Device | 1 Device | 1 Device | Unlimited | N/A |
| ESD (Electronic Software Delivery) | Yes | Yes | No | Yes | Yes |
| Language Support | English | English | English | Multilingual | English |
| License Duration | Lifetime | Lifetime | Lifetime | Lifetime | Lifetime |
| License Key Included | Yes | Yes | Yes | Yes | Yes |
| License Type | Perpetual | Perpetual | Perpetual | Perpetual | Volume |
| Platform Compatibility | N/A | N/A | N/A | Cross-Platform | Cross-Platform |
| Product Name | FL-4220-BOOST-K9-Booster Performance License for Cisco 4220 Series Routers | SL-4220-APP-K9=-AppX License for Cisco ISR 4220 Series | SL-4350-APP-K9-AppX License (Paper) for Cisco 4351 (System) | L-SL-44-APP-K9=-APPX LICENSE 4431/4451 WITH WAAS/VWAAS 1300/2500 CONNS RTU | L-SL-4320-APP-K9=-APPX LICENSE WITH 200 CONNS ISRWAAS OR 750 CONNS VWAAS |
| Product Region | Global | Global | Global | Global | Global |
| Product Type | Software License | Software License | Software License | Software License | Software License |
| Renewable | No | N/A | No | No | N/A |
| Software Category | Network Management | Network Management | Network Management | Network Management | Network Management |
| Software Format | Downloadable | N/A | Physical | Downloadable | Downloadable |
| Support Included | Yes | Yes | Vendor Support Required | Vendor Support Required | Yes |
| Use Case | Enterprise | Enterprise | IT Admin | Enterprise | Enterprise |
| User Count | N/A | N/A | N/A | N/A | Unlimited |
Booster license increases performance for Cisco 4220 series reliably and with minimal administrative effort.
Professional-grade deployment and predictable throughput.
Smooth activation and enterprise-ready usability.
Stable operations and strong reliability.
Easy management and consistent performance for B2B networks.
The Booster Performance License (FL-4220-BOOST-K9) is a software upgrade that unlocks advanced forwarding capabilities and increases packet-processing throughput on Cisco 4220 Series Routers.
The FL-4220-BOOST-K9 license is compatible exclusively with Cisco 4220 Series Integrated Services Routers running IOS XE Software.
By enabling additional hardware acceleration and optimized forwarding paths, the license can boost throughput by up to 100% over the standard performance level.
The FL-4220-BOOST-K9 license is sold as a perpetual license, providing a one-time purchase for lifetime entitlement to the unlocked performance features.