Cisco C9300X-48TX-E: What Are Its Key Feature
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Overview of Cisco C1121-4P++
The Cisco C1121-4P++ is a high-performance industrial router optimized for environments requiring robust Power over Ethernet (PoE) and cellular failover capabilities. Designed for IoT and edge networking, it features 4x PoE++ ports (90W per port), dual 5G/LTE modems, and Cisco SD-WAN integration to ensure seamless connectivity in harsh conditions. The “++” suffix signifies its support for IEEE 802.3bt (PoE++), delivering up to 360W total power for energy-intensive devices.
Key Technical Specifications and Industrial Applications
Hardware and performance highlights:
- PoE++ capacity: 90W per port (360W total), capable of powering PTZ cameras, digital signage, and industrial PCs.
- 5G/LTE redundancy: Dual-modem setup with Sub-6 GHz and mmWave support for ultra-low-latency failover.
- Rugged design: Operates in -40°C to 75°C, with IP67-rated dust/water resistance and MIL-STD-810G compliance.
- SD-WAN integration: Enables policy-based traffic steering and zero-touch provisioning for distributed sites.
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Primary use cases:
- Smart cities: Powering traffic management systems and public safety cameras.
- Mining operations: Connecting autonomous haul trucks and drilling equipment in remote areas.
- Retail chains: Supporting high-resolution digital menus and AI-driven inventory robots.
C1121-4P++ vs. Standard PoE Routers
| Feature | C1121-4P++ | C1121-4P (Non-++) |
|---|---|---|
| PoE Standard | IEEE 802.3bt (90W/port) | IEEE 802.3at (30W/port) |
| Total Power Budget | 360W | 120W |
| 5G Support | mmWave + Sub-6 GHz | LTE-Advanced Pro only |
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Choose the 4P++ model if:
- Your deployment requires high-wattage PoE for devices like AI servers or industrial PCs.
- Millimeter-wave 5G is critical for low-latency applications like autonomous machinery.
- Future-proofing against power and bandwidth demands is a priority.
Addressing Critical Deployment Questions
Q: Can the router power 4x 90W devices simultaneously?
Yes, but thermal management is crucial. In high-temperature environments, derate power to 70W/port to avoid overheating.
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Q: How does mmWave 5G perform in rural areas?
Limited range: mmWave excels in urban settings but requires line-of-sight. Pair with Sub-6 GHz for rural coverage.
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Q: Is SD-WAN licensing included?
No—requires a separate Cisco SD-WAN subscription for advanced features like application-aware routing.
Sourcing and Lifecycle Management
For guaranteed hardware integrity and support, purchase the C1121-4P++ through authorized partners like itmall.sale. Ensure firmware is updated to IOS-XE 17.12.1 for 5G stability and PoE++ optimizations.
Final Insight
The C1121-4P++ redefines edge networking by merging industrial ruggedness with enterprise-grade power and connectivity. While its cost may seem prohibitive for smaller deployments, the ROI becomes evident in scenarios where a single device outage could halt an entire mining operation or smart grid. For industries balancing rapid IoT expansion with infrastructure durability, this router isn’t just a tool—it’s the backbone of next-gen automation.