ISR4451-X/K9
ISR 4451 with 4 onboard GE, 3 NIM slots, 1 ISC slot, 2 SM slots, 8 GB Flash Memory default, 2 GB DRAM default (data plane), 4 GB DRAM default (control plane)
The Cisco ISR4451-X/K9 is a 2Gbps mid-range branch router with integrated services, modular interfaces, dual power supplies, and performance licensing.
ISR4451-X/K9 Overview
The Cisco ISR4451-X/K9 is a mid-range branch office router designed to deliver comprehensive services with fast performance. With up to 2Gbps routing capacity and modular slots for services, it consolidates multiple functions into a single platform.
The Cisco ISR4451-X/K9 allows deploying concurrent data, security, voice, and application services. It provides gigabit network connections along with modular enhancements like service modules and network interface modules. The router runs Cisco IOS XE software with on-demand service activation.
A performance license can double the default 1Gbps capacity to 2Gbps without requiring new hardware. The Cisco ISR4451-X/K9 secures investments with support for hardware stacking, dual power supplies, and IPv6 readiness.
Quick Specifications
| Feature | Description |
|---|---|
| Routing Performance | Up to 2Gbps with performance license |
| WAN Ports | 4x Gigabit Ethernet (up to 4 with SFP) |
| LAN Ports | 4x Gigabit Ethernet (up to 4 with SFP) |
| Slots | 3 NIM slots, 2 SM slots, 1 ISC slot |
| Memory | 8GB default, up to 16GB DRAM and flash |
| Power Supply | Dual redundant internal AC/DC/PoE |
| Rack Units | 2RU |
| Software | Modular Cisco IOS XE |
ISR4451-X/K9 Details and Highlights
- Integrated Services: Natively supports optimization, security, cloud connectivity, caching, and voice/video services.
- Gigabit Performance: Routes up to 2Gbps with performance license upgrade, 1Gbps by default.
- Modular Flexibility: Slots for network modules, service modules, and integrated service cards.
- Converged Access: Provides data, voice, video, and wireless services over a unified platform.
- Investment Protection: Performance doubled with on-demand license. Supports stacking, dual PSU.
Comparison to Similar Models
| Feature | ISR 4451 | ISR4461/K9 | ISR4431/K9 |
|---|---|---|---|
| Performance | 2Gbps | 3Gbps | 1Gbps |
| Rack Units | 2RU | 3RU | 1RU |
| Power Supply | Dual | Dual | Single |
| NIM Slots | 3 | 3 | 3 |
| SM Slots | 2 | 3 | 0 |
Full Specifications
| Feature | ISR 4451 Specifications |
|---|---|
| Routing Performance | Up to 2Gbps aggregate with performance license |
| Ports | 4x Gigabit Ethernet (up to 4 with SFP) |
| Slots | 3 NIM slots, 2 SM slots, 1 ISC slot |
| Memory | 8GB default, up to 16GB DRAM and flash |
| Power Supply | Internal dual redundant AC/DC/PoE |
| Dimensions | 3.5 x 17.25 x 18.5 in (88.9 x 438.15 x 469.9 mm) |
| Rack Height | 2RU |
| Weight | 18.5 lb (8.4 kg) with AC power supply |
| Software | Cisco IOS XE Software |
| Licensing | IP Base, Performance, Security, AppX, UC |
Supported Modules and Accessories
| Module Type | Supported Options |
|---|---|
| NIMs | T1/E1, T3/E3, Serial, xDSL, Gigabit Ethernet |
| Service Modules | VPN, Optimization, Network Analysis, Firewall, Content Filtering |
| Accessories | SFPs, power supply, faceplates, rack mounts |
ISR4451-X/K9 Licensing
The Cisco ISR4451-X/K9 uses Cisco IOS XE Software with licensing options:
- IP Base included by default
- Performance license to double the throughput
- Security, Unified Communications, and AppX optional licenses
Installation and Deployment
- Designed for 19″ or 23″ rack mounting
- Dual redundant power supply for reliability
- Supports Smart Licensing and Cisco DNA Center
- Cisco installation and configuration services available
Compliance and Safety
- UL 60950-1 safety certified
- EMC emissions compliance to Class A requirements
- Meets NEBS shock and vibration specs
Warranty and Support
- 90 day limited hardware warranty
- IOS software warranty with Cisco support contracts
- 24×7 technical support available through Cisco SMARTnet
ISR4451-X/K9 End of Life Policy
- Minimum 6 months’ notice for hardware end-of-life
- Minimum 12 months’ notice for software end-of-support
- More details at Cisco EOL Policy
Brand
Cisco Systems
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