ISR4331/K9
ISR 4331 with 3 onboard GE, 2 NIM slots, 1 ISC slot, 1 SM slots, 4 GB Flash Memory default, 4 GB DRAM default
The Cisco ISR4331/K9 is a resilient, modular 300Mbps branch router in a compact 1RU form factor with integrated services and licensing.
ISR4331/K9 Overview
The Cisco ISR4331/K9 is a compact branch office router delivering up to 300Mbps performance. It allows deploying integrated services like security, unified communications, and application optimization.
The Cisco ISR4331/K9 provides gigabit network connections along with modular interface and service module expandability. It runs the Cisco IOS XE modular software, enabling on-demand activation of value-added functions.
With the performance license upgrade, the router capacity can be increased from 100Mbps default to 300Mbps maximum. The Cisco ISR4331/K9 secures branch investments with reliability features like hardware stacking, redundant power supply, and WAN interface diversity.
Quick Specifications
| Feature | Description |
|---|---|
| Routing Performance | Up to 300Mbps with performance license |
| WAN Ports | 3x Gigabit Ethernet (up to 3 with SFP) |
| LAN Ports | 3x Gigabit Ethernet (up to 3 with SFP) |
| Slots | 2 NIM slots, 1 SM slot, 1 ISC slot |
| Memory | 4GB default, up to 16GB DRAM |
| Power Supply | Single integrated AC/DC/PoE |
| Rack Units | 1RU |
| Software | Modular Cisco IOS XE |
ISR4331/K9 Details and Highlights
- Integrated Services: Natively supports optimization, security, voice, and cloud connectivity.
- Gigabit Performance: Routes up to 300Mbps with license, 100Mbps by default.
- Compact Form Factor: 1RU height with integrated interfaces. Wall-mount option available.
- Modular Expandability: Slots for network modules, service modules, integrated cards.
- Resiliency Features: Hardware stacking, redundant power supply option, WAN link diversity.
Supported Products
| Platform | Description |
|---|---|
| ISR 4331 | Compact branch router, up to 300Mbps |
| ISR4351/K9 | Mid-range branch router, up to 400Mbps |
| ISR4321/K9 | Entry-level branch router, up to 100Mbps |
Comparison to Similar Models
| Feature | ISR 4331 | ISR 4351 | ISR 4321 |
|---|---|---|---|
| Performance | 300Mbps | 400Mbps | 100Mbps |
| Rack Units | 1RU | 2RU | 1RU |
| Power Supply | Single | Dual | Single |
| NIM Slots | 2 | 3 | 2 |
| SM Slots | 1 | 2 | 0 |
Full Specifications
| Feature | ISR 4331 Specifications |
|---|---|
| Routing Performance | Up to 300Mbps aggregate with license |
| Ports | 3x Gigabit Ethernet (up to 3 with SFP) |
| Slots | 2 NIM slots, 1 SM slot, 1 ISC slot |
| Memory | 4GB default, up to 16GB DRAM |
| Power Supply | Single integrated AC/DC/PoE |
| Dimensions | 1.75 x 17.25 x 17.25 in (44.45 x 438.15 x 438.15 mm) |
| Rack Height | 1RU |
| Weight | 7.7 lb (3.5 kg) |
| 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, Content Filtering |
| Accessories | SFPs, power supply, faceplates, rack mounts |
ISR4331/K9 Licensing
The Cisco ISR4331/K9 uses Cisco IOS XE Software with licensing:
- IP Base included by default
- Performance license to increase the throughput
- Optional Security, Unified Communications, and AppX licenses
Installation and Deployment
- 1RU form factor for space-constrained sites
- Rack mount or wall mount options available
- Supports Smart Licensing and Cisco DNA Center
- Cisco installation services available
Compliance and Safety
- UL 60950-1 safety certified
- EMC emissions compliance to Class A standards
- Meets NEBS shock and vibration requirements
Warranty and Support
- 90 day limited hardware warranty
- IOS software warranty with Cisco support contracts
- 24×7 technical support available through Cisco SMARTnet
ISR4331/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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