Cisco 921 Gigabit Ethernet Security Router – C921-4P
The Cisco® 921-4P Gigabit Ethernet Security Router is a compact, high-performance router designed for secure branch connectivity, advanced threat defense, and centralized management. Built on Cisco’s trusted 900 Series ISR platform, it delivers integrated security, high-speed broadband, and enterprise-class performance — making it ideal for small offices and managed service deployments.
Key Features
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Integrated Security and Threat Defense
Protects networks with IPsec VPN, firewall inspection, and intrusion prevention for comprehensive branch-level security. -
High Availability and Resilience
Supports redundant WAN connections, VRRP, HSRP, and load balancing for continuous uptime and business continuity. -
High-Performance Networking
Runs multiple services simultaneously — including QoS, routing, and VPN — without performance degradation. -
4-Port Managed Gigabit Switch
Includes 4 LAN ports for connecting multiple local devices, with VLAN support for flexible network segmentation. -
Advanced Encryption & VPN Support
Features AES, 3DES, and FlexVPN for secure communications and scalable connectivity. -
Simplified Deployment & Management
Configurable through Cisco IOS Software, web GUI, and Cisco Configuration Professional tools for easy provisioning. -
Unified Wired & Wireless Control
Enables centralized management of both wireline and wireless devices from a single console.
Specifications
| Feature | Specification |
|---|---|
| Model | Cisco 921-4P ISR |
| WAN Interfaces | 2 × Gigabit Ethernet |
| LAN Interfaces | 4 × Gigabit Ethernet managed switch |
| USB Ports | 1 × USB 2.0 Type-A |
| Recommended Users | Up to 50 |
| Default DRAM | 1 GB |
| Flash Memory | 2 GB (non-upgradable) |
| Security Features | IPsec VPN, Firewall, SSL VPN, DMVPN, FlexVPN |
| QoS Support | LLQ, WFQ, CBWFQ, NBAR2, DiffServ |
| Routing Protocols | OSPF, BGP, EIGRP, RIP, VRF Lite |
| Power Input | 100–240V AC, 50–60 Hz (internal power supply) |
| Dimensions (H × W × D) | 1.70 × 9.0 × 9.5 in (4.32 × 22.86 × 24.13 cm) |
| Weight | 1.2 kg |
| Operating Temperature | 0°C to 50°C |
| Humidity Range | 5%–95% non-condensing |
| Compliance | IEC 60950-1, UL 60950-1, EN 60950-1 |
| Certifications | Eco-Friendly |
| Material | Metal enclosure |
| Care Label | Fragile |
What’s in the Box
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1 × Cisco C921-4P Gigabit Ethernet Security Router
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1 × Power Cable
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1 × Quick Start Guide
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Mounting Accessories
Why Choose Cisco 921-4P
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Industry-leading security and reliability for small and branch offices
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Simplified network management with Cisco IOS and web tools
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Integrated 4-port switch for multi-device connectivity
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Flexible routing and VPN support for secure enterprise extensions
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Proven Cisco quality with Smart Net Total Care® support
Wambui –
Security features are top-notch, gives me peace of mind.
Awino –
Reliable and stable, never goes down. Great for enterprise use, very robust.
Adhiambo –
Handles heavy network traffic with ease.
Wekesa –
Support from Cisco is always helpful. I trust Cisco for my network infrastructure.
Mgeni –
Very happy with this professional-grade router.
Hassan –
Security features are top-notch, gives me peace of mind. The command-line interface is powerful for experts.
Adhiambo –
Security features are top-notch, gives me peace of mind.
Kiptoo –
Definitely recommend for serious network needs.
Ochi –
Handles heavy network traffic with ease. Perfect for a growing business network. It’s built like a tank, very durable.
Liz –
Security features are top-notch, gives me peace of mind. Handles heavy network traffic with ease. I trust Cisco for my network infrastructure.