Cisco ISR4351-SEC/K9 ISR 4351 Gigabit Ethernet Security Bundle Router
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Cisco
ISR4351-SEC/K9 ISR 4351 Gigabit Ethernet Security Bundle Router
The Cisco ISR4351-SEC/K9 is a robust, rack-mountable branch router from Cisco’s acclaimed 4000 Series. Delivering 200–400 Mbps aggregate throughput, it supports up to six onboard Gigabit interfaces (3 RJ-45 + 3 SFP) and features modular expansion slots (2 SM-X, 3 NIM) to tailor additional services. Bundled with the Security license, this router brings industry-leading VPN (IPsec, TLS), IDS/IPS, firewall, and secure connectivity to medium-sized enterprises. Equipped with multi-core architecture, dual power options, and Cisco IOS XE, the ISR4351‑SEC/K9 consolidates routing, security, and WAN optimization in a scalable, future-ready platform—ideal for secure and efficient branch deployments.
Features :
The ISR4351-SEC/K9 extends Cisco’s Software-Defined WAN (SD-WAN) capabilities to branch environments, supporting secure, application-aware networking with high performance. Its six 1 Gbps interfaces—three copper and three SFP—offer flexible wired and fiber links. Internally, two SM-X slots accommodate Ethernet or WAN modules (e.g., LTE, voice), while three NIM slots add capabilities like serial, voice, or additional WAN connections.
Advanced Options :
Powered by quad-core CPUs, 4 GB DRAM (upgradable to 16 GB), and 4 GB flash, the router handles security-intensive tasks (VPN, encryption, firewall) without sacrificing throughput. The Security Bundle activates features such as IPsec, zone-based firewall, AVC, and secure connectivity. Designed for redundancy, it offers dual internal PSUs (AC and optional DC), USB ports for backup and recovery, and onboard ISC for compute virtualization. All managed via Cisco IOS XE and compatible with Cisco DNA Center, it enables streamlined deployment and automated policy orchestration
Product Key Features
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3 × 1 Gbps RJ‑45 + 3 × 1 Gbps SFP
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Security features: Next‑gen firewall, IPsec, IDS/IPS
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Expansion: 2 SM‑X + 3 NIM support
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200–400 Mbps encrypted throughput
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4 GB DRAM + 4 GB flash (expandable)
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AC or optional DC power
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Rack‑mountable (2 RU)
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USB ports and console for backup/maintenance
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Cisco IOS XE with DNA Center orchestration
Reliability & Performance :
The ISR4351-SEC/K9 is engineered for continuous, secure operation. Its performance exceeds 200 Mbps even under heavy cryptographic loads and services—stronger than earlier G2 platforms, making it ideal for concurrent encryption, NAT, QoS, and application visibility workloads. Multi-core architecture ensures stable processing, while USB/console interfaces assist in recovery. With Cisco’s legacy of quality and support through late 2028, this router is a reliable and secure foundation for branch infrastructure.
Key Features :
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Security Bundle: Firewall, VPN, IPS, AVC, WAAS
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Six 1 Gbps ports: 3 RJ‑45 + 3 SFP
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Modular expansion: 2 SM‑X + 3 NIM slots
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Performance: 200–400 Mbps aggregate throughput
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System memory: 4 GB DRAM & 4 GB flash (max 16 GB)
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Dual power options: AC standard; DC optional
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Form factor: 2 RU rack-mountable
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Secure OS: Cisco IOS XE with full SD‑WAN and management support
Specifications:
| Specification | Details |
|---|---|
| Model Number | ISR4351-SEC/K9 |
| Product Type | Branch Router with Security Bundle |
| WAN/LAN Ports | 3×RJ-45 1 GbE + 3×SFP 1 GbE |
| SM‑X Slots | 2 (single or double-wide modules) |
| NIM Slots | 3 |
| Performance | 200–400 Mbps aggregate |
| DRAM | 4 GB default (up to 16 GB) |
| Flash Memory | 4 GB default (up to 16 GB) |
| Power Supply Options | AC (internal), DC optional |
| Dimensions (H×W×D) | 88.9×438×470 mm (2 RU) |
| Weight | approx. 11 kg |
| Form Factor | Modular rack-mountable |
| OS | Cisco IOS XE |
| Management | CLI, Web, SNMP, DNA Center, RESTCONF/NETCONF |
| Warranty | 3‑Year hardware & software |
Additional information
| Weight | 13.1 kg |
|---|---|
| Dimensions | 46.99 × 43.82 × 8.89 cm |
| Brand | Cisco |
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