The Cisco ISR4331/K9 4331 Integrated Services Router is a versatile and high-performance network solution designed for medium-sized enterprises and branch offices that require integrated services such as advanced routing, security, voice, and video. Built on a powerful multicore processor with 4 GB of DRAM, it offers a range of features to support growing network demands, including up to 500 Mbps aggregate throughput and 100 Mbps of IPsec VPN throughput.

This router features three Gigabit Ethernet ports (1 WAN and 2 LAN), with optional support for a multigigabit Ethernet port. It also provides flexible expansion capabilities with two Enhanced High-Speed WAN Interface Card (EHWIC) slots and two Network Interface Module (NIM) slots, as well as a service module slot for additional features.

Security is a major focus of the ISR4331, offering robust features like advanced firewall protection, VPN support, and Intrusion Prevention System (IPS), all managed through Cisco’s IOS software. It also supports various routing protocols like OSPF, BGP, EIGRP, and RIP, as well as IPv6 and IPv4 for comprehensive network management.

For businesses requiring voice and video services, the ISR4331 supports Cisco Unified Communications Manager (CUCM) and can be integrated with additional voice network modules. The router is also cloud-ready, offering Cisco SD-WAN capabilities for seamless connectivity to hybrid cloud environments.

Built for reliability, the ISR4331 can be mounted in a 1U rack and includes an internal 60W power supply, with an optional redundant power supply for high availability. It supports remote management and monitoring via tools like Cisco Prime, DNA Center, and SNMP.

The Cisco ISR4331 is an ideal choice for businesses that need a flexible, scalable router capable of supporting diverse network applications, enhanced security, and simplified cloud integration.