Cisco ISR4331-AX/K9 Router
Cisco ISR4331-AX/K9 Router is a high-performance integrated services router (ISR) specifically designed for enterprise branch offices. It is a part of the Cisco 4000 series and stands out for its focus on application experience, which helps businesses get the most out of their network.The "AX" in the model name signifies the Advanced Services Bundle, which includes advanced software features for application optimization and security. The router is powered by a multi-core CPU and comes with a base 4 GB of RAM (upgradable to 16 GB), providing ample processing power for a range of network services. Its aggregate throughput ranges from 100 Mbps to 300 Mbps, which can be boosted with performance licenses.The ISR4331-AX/K9 is built to address the growing need for application-aware networking. It includes features like PfRv3 (Performance Routing version 3), WAAS (WAN Optimization), and NBAR2 (Network-Based Application Recognition), which intelligently route and prioritize traffic to ensure a better user experience for critical business applications. It also provides advanced security features like VPN and Zone-Based Firewall.In terms of physical connectivity, the router is well-equipped with three GE ports (a combination of RJ-45 and SFP), two Network Interface Module (NIM) slots, and one Service Module (SM) slot. This modular design allows businesses to customize the router with various modules to meet their specific needs, such as adding WAN connectivity, voice services, or a higher level of security.As of late August 2025, the Cisco ISR4331-AX/K9 Router is available in the Bangladesh market. The price can vary significantly based on the vendor, licenses, and any included modules. A standard unit is priced similarly to the security bundle, typically ranging from ৳205,000 to ৳230,000. The product is generally backed by a 1-year parts and service warranty.
