Cisco ISR4321/K9 4321 Integrated Services Router

The Cisco ISR4321/K9 4321 Integrated Services Router is an enterprise-class branch router designed to deliver secure WAN connectivity, advanced routing, integrated security and scalable application services for modern business networks. Built on Cisco IOS XE, the ISR4321 provides organizations with a highly reliable networking platform that combines routing, security, voice, VPN and intelligent WAN optimization within a compact 1U appliance.

Featuring a default forwarding performance of 50 Mbps with optional licensing to increase throughput to 100 Mbps, the Cisco ISR4321/K9 enables businesses to scale network performance without replacing existing hardware. Its modular architecture supports Network Interface Modules (NIMs), voice services, SFP fibre connectivity, advanced security, SD-WAN capabilities and enterprise routing, making it an ideal solution for branch offices, retail organizations, financial institutions and distributed enterprise environments.

Browse our complete range of Network Routers in Kenya, explore our collection of Cisco Routers in Kenya, or discover more genuine Cisco networking products through the Cisco Online Store in Kenya. Solforbs Store supplies genuine Cisco networking equipment backed by manufacturer warranty, professional installation, network configuration and comprehensive after-sales technical support throughout Kenya.

Cisco ISR4321/K9 4321 Integrated Services Router Features in Kenya

Enterprise Branch Office Performance

The Cisco ISR4321/K9 is designed for enterprise branch deployments requiring secure WAN connectivity, intelligent routing and integrated application services. It delivers a default forwarding throughput of 50 Mbps with optional licensing to increase performance up to 100 Mbps as network requirements grow.

Scalable Performance Licensing

Unlike fixed-performance routers, the ISR4321 supports Cisco’s pay-as-you-grow licensing model. Organizations can upgrade throughput through software licensing without replacing hardware, protecting long-term infrastructure investments while supporting future expansion.

Cisco IOS XE Operating System

Powered by Cisco IOS XE, the router delivers enterprise-grade routing, security, automation and software resilience. The modular operating system improves reliability while supporting advanced networking, security and cloud-managed services.

Advanced Enterprise Routing

The router supports comprehensive IPv4 and IPv6 routing protocols including OSPF, EIGRP, BGP and Policy-Based Routing. Additional capabilities such as Performance Routing (PfR) and Network-Based Application Recognition (NBAR2) optimize application delivery across WAN connections.

Integrated VPN and Security

The ISR4321 supports IPsec VPN, DMVPN and FlexVPN technologies together with enterprise firewall services to secure communications between headquarters, branch offices and remote users while protecting business-critical information.

Modular Network Expansion

Two Network Interface Module (NIM) slots allow organizations to add WAN, voice, serial or other expansion modules without replacing the router. This modular architecture enables flexible deployment for changing business requirements.

Unified Communications Ready

The integrated PVDM4 slot supports Cisco voice services including FXO, FXS, BRI and T1/E1 interfaces. Businesses can deploy unified communications, IP telephony and voice gateways from a single networking platform.

Gigabit Ethernet and Fibre Connectivity

The router includes two Gigabit Ethernet ports together with one dedicated SFP interface for fibre connectivity, providing flexible deployment options for enterprise LANs, fibre internet services and managed WAN environments.

PoE Boost Capability

When deployed with supported hardware, PoE Boost provides up to 260 watts of available power for connected IP phones, wireless access points and other compatible network devices, reducing the need for separate power infrastructure.

Comprehensive Management

Administrators can configure and manage the router using Cisco IOS XE, CLI, enterprise management platforms and automation tools, simplifying deployment, software maintenance and monitoring across distributed enterprise networks.

USB and Console Connectivity

Dedicated USB, RJ-45 console and USB mini-B console interfaces simplify local configuration, software installation, configuration backup and recovery while supporting routine maintenance tasks.

Rack-Mount Enterprise Design

The compact 1U chassis is suitable for standard network racks while also supporting desktop deployment where required. Integrated status LEDs provide quick visibility into power, system health, fan operation, PoE status and module activity.

Cisco ISR4321/K9 4321 Integrated Services Router Specifications in Kenya

• Brand: Cisco
• Model: ISR4321/K9
• Series: Cisco 4000 Series Integrated Services Routers
• Product Type: Enterprise Integrated Services Router
• Operating System: Cisco IOS XE
• Default Throughput: 50 Mbps
• Maximum Licensed Throughput: 100 Mbps
• Performance License: FL-4320-PERF-K9
• WAN/LAN Ports: 2 × RJ-45 Gigabit Ethernet
• SFP Port: 1 × Gigabit SFP
• Management Port: 1 × RJ-45 Gigabit Ethernet
• Console Ports: RJ-45 Console and USB Mini-B Console
• USB Interface: USB Type-A
• Network Interface Module Slots: 2
• Voice Module Slot: 1 × PVDM4
• Memory: 4 GB Standard, Expandable to 8 GB
• Flash Memory: 4 GB Standard, Expandable to 8 GB
• Routing Protocols: OSPF, EIGRP, BGP and Policy-Based Routing
• Application Optimization: PfR and NBAR2
• VPN: IPsec VPN, DMVPN and FlexVPN
• Firewall: Cisco IOS Firewall
• PoE Support: Up to 260 W with PoE Boost
• Power Supply: External AC Power
• Form Factor: 1U Rack Mount/Desktop
• Dimensions: 44.55 × 369.57 × 294.64 mm
• Package Weight: 9.19 kg
• Compatible NIM Modules: Voice, WAN and Serial Modules
• Compatible SFP Modules: Cisco GLC-SX-MMD, GLC-LH-SMD and GLC-ZX-SMD

Applications of Cisco ISR4321/K9 4321 Integrated Services Router

• Enterprise branch offices
• Corporate headquarters connectivity
• Multi-site WAN deployments
• Financial institutions
• Retail chains
• Government organizations
• Healthcare networks
• Educational institutions
• Voice gateway deployments
• Secure VPN connectivity
• Cisco SD-WAN environments
• Fibre internet connectivity
• Managed service provider networks
• Cloud application connectivity
• Business continuity deployments

Buy Cisco ISR4321/K9 4321 Integrated Services Router in Kenya

Buy the Cisco ISR4321/K9 4321 Integrated Services Router from Solforbs Store at the best price in Kenya. We supply genuine Cisco networking products backed by manufacturer warranty, competitive pricing and professional technical support.

We offer fast countrywide delivery to Nairobi, Mombasa, Kisumu, Nakuru, Eldoret, Thika, Kiambu, Machakos, Nyeri, Meru, Embu, Kakamega, Kisii, Kitale, Naivasha, Kericho, Bungoma, Garissa, Malindi and other towns throughout Kenya.

Our team also provides router installation, Cisco IOS XE configuration, VPN deployment, SD-WAN configuration, routing optimization, network troubleshooting and comprehensive after-sales technical support throughout Kenya.

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