Description:

The Cisco 3845 Integrated Services Router is an enterprise-class routing platform used in Cisco 3800 Series networking systems to deliver high-performance routing, secure WAN connectivity, and integrated network services for enterprise infrastructures. It operates with Cisco IOS 15.1 and includes 1 GB DRAM and 256 MB flash memory along with dual power supplies to provide improved reliability and continuous network operation. Commonly installed in corporate branch offices, enterprise WAN environments, and distributed business networks, this router enables secure communication and scalable connectivity across multiple network locations. Network administrators, IT infrastructure teams, and system integrators use this router for deploying enterprise routing services, replacing legacy routing hardware, or expanding WAN connectivity in Cisco-based network infrastructures.

Applications:

The Cisco 3845 router is used in enterprise network infrastructures to provide advanced routing, secure WAN connectivity, and integrated network services between branch offices and central data centers. It is commonly deployed in corporate WAN networks, service provider edge environments, and large enterprise branch locations where reliable routing performance and secure communication are required. Organizations implement this router to support VPN connectivity, manage network traffic efficiently, and maintain stable communication across distributed enterprise networks.

Technical Specifications:

• Brand: Cisco
• Manufacturer Part Number (MPN): Cisco 3845
• Product Type: Integrated Services Router
• Series: Cisco 3800 Series Integrated Services Routers
• Operating System: Cisco IOS 15.1
• System Memory (DRAM): 1 GB
• Flash Memory: 256 MB
• Ethernet Ports: 2 × Gigabit Ethernet ports
• Expansion Slots: 4 × Network Module (NM) slots
• Interface Card Slots: 4 × High-Speed WAN Interface Card (HWIC) slots
• AIM Slots: 2 × Advanced Integration Module (AIM) slots
• USB Ports: 2 × USB ports
• Security Features: Integrated firewall, VPN support, intrusion prevention capability
• VPN Support: IPsec VPN and SSL VPN
• Power Supply: Dual internal power supplies
• Form Factor: Rack-mountable chassis

Common Replacements:

• Cisco ISR 3925/K9
• Cisco ISR 3945/K9
• Cisco ISR 4331/K9