Cisco ISR4331/K9 4331 Integrated Services Router

The Cisco ISR4331/K9 is an enterprise-class Integrated Services Router (ISR) from the Cisco 4000 Series, designed for branch offices, medium-sized businesses, and enterprise WAN deployments. It combines high-performance routing, advanced security, VPN services, application optimization, and modular expansion capabilities in a compact 1RU platform. With support for multiple WAN interfaces, modular network expansion, and integrated security services, the ISR4331/K9 provides a scalable and reliable networking solution for modern business environments.

Product Features

High-Performance Enterprise Routing

Delivers an aggregate throughput of 100 Mbps, upgradeable to 300 Mbps through performance licensing, making it suitable for growing enterprise networks.

Multiple Gigabit WAN Interfaces

Equipped with three onboard Gigabit Ethernet interfaces, including dedicated RJ45 and SFP connectivity options for flexible WAN deployment.

Modular Expansion

Supports two Network Interface Module (NIM) slots, one Service Module (SM-X) slot, and one Integrated Services Card (ISC) slot, allowing the router to be customized for different networking requirements.

Advanced Security Services

Provides enterprise-grade security with integrated firewall, IPsec VPN, access control lists (ACLs), intrusion prevention support, and secure network segmentation.

Secure VPN Connectivity

Supports secure site-to-site and remote-access VPN connections to enable encrypted communication between branch offices, headquarters, and remote users.

IPv4 and IPv6 Support

Fully supports both IPv4 and IPv6 networking, ensuring compatibility with modern and future enterprise network infrastructures.

Centralized Network Management

Supports Cisco IOS XE management through Command-Line Interface (CLI), SNMP, SSH, and web-based management tools for simplified configuration and monitoring.

Rack-Mount Enterprise Design

Designed in a compact 1U rack-mount chassis suitable for branch offices, enterprise edge deployments, and data communication rooms.

Product Specifications

• Model: ISR4331/K9
• Product Type: Integrated Services Router
• Series: Cisco 4000 Series ISR
• Form Factor: 1U Rack Mount
• Aggregate Throughput: 100 Mbps (Upgradeable to 300 Mbps with performance license)
• Onboard Gigabit Ethernet Ports: 3
• WAN Interfaces: RJ45 and SFP Gigabit Ethernet
• Network Interface Module (NIM) Slots: 2
• Service Module (SM-X) Slots: 1
• Integrated Services Card (ISC) Slots: 1
• Routing Protocols: IPv4 and IPv6
• VPN Support: IPsec VPN
• Firewall: Integrated Stateful Firewall
• Security Features: Access Control Lists (ACLs), Intrusion Prevention Support, VPN Encryption, Network Address Translation (NAT)
• USB Ports: 1 × USB Type-A
• Management Port: 1 × Dedicated Gigabit Ethernet Management Port
• Console Port: RJ45 Console Port
• Default DRAM: 4 GB
• Maximum DRAM: 16 GB
• Default Flash Memory: 4 GB
• Maximum Flash Memory: 16 GB
• Power Supply: Internal AC Power Supply
• Operating Temperature: 0°C to 40°C
• Mounting Options: Rack Mount
• Ideal Applications: Enterprise branch offices, medium-sized businesses, WAN edge deployments, VPN connectivity, secure enterprise networking, and multisite business networks.