Cisco ISR4321-SEC/K9 — Secure Branch Routing at Enterprise Scale
Save big on the Cisco ISR 4321 Security Bundle router without sacrificing performance or reliability. Every refurbished ISR4321-SEC/K9 from Reef Telecom is thoroughly tested, cleaned, and backed by our industry-leading 10-year warranty—5x longer than most competitors.
Key Specifications
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Part Number: ISR4321-SEC/K9
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Series: Cisco ISR 4000 Series Integrated Services Router
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Security License: Permanent SEC license included (IP Base + Security)
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Throughput: 50 Mbps – 100 Mbps aggregate
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WAN/LAN Ports: 2x onboard GE (RJ-45) + 1x SFP port
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Module Slots: 2x NIM slots, 1x ISC slot
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Memory: 4 GB DRAM (expandable to 16 GB) / 4 GB Flash (expandable to 8 GB)
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CPU: Multi-core processor for concurrent service handling
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Power: AC 100–240V auto-ranging (external AC or PoE supply)
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Form Factor: 1 RU, rack-mountable or wall-mountable
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Management: RJ-45 console, mini-USB console, USB 2.0, AUX port
Built-In Security & Intelligent WAN
The ISR4321-SEC/K9 includes Cisco's permanent Security license, enabling hardware-accelerated encryption, firewall protection, VPN (IPsec/DMVPN), Zone-Based Firewall, and intrusion prevention—all without degrading throughput. Cisco Intelligent WAN (IWAN) dynamically routes traffic across the best available link based on real-time application and network conditions.
Ideal Use Cases
Perfect for enterprise branch offices, SD-WAN deployments, CCNA/CCNP lab environments, and small-to-medium business WANs requiring secure connectivity to private data centers and public clouds over MPLS or Internet links.
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