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C1121-4PLTEPPM: Unified Connectivity for Demanding Edge Environments
The Cisco C1121-4PLTEPPM is a 4-port PoE+ router engineered for retail, healthcare, and industrial sites requiring always-on connectivity and high-power device support. Combining 120W total PoE+, embedded LTE-Advanced Pro failover, and Cisco SD-WAN readiness, it streamlines deployments where power delivery, uptime, and WAN diversity are non-negotiable.
Technical Breakdown: Addressing Core User Concerns
Q: What PoE+ devices can it support simultaneously?
A: With 30W per port (802.3at), the C1121-4PLTEPPM powers 4x devices like Wi-Fi 6 APs, IP cameras, or digital signage without external injectors. Its 120W budget ensures stable operation even during peak loads, such as simultaneous AP firmware updates.
Q: How does LTE-Advanced Pro enhance uptime?
A: The integrated Cat 18 LTE modem supports 4x carrier aggregation and theoretical speeds up to 1.2 Gbps, acting as a primary or backup WAN link. This outperforms older C1100 models (e.g., C1111-4P) limited to Cat 12 modems (600 Mbps), reducing congestion during ISP outages.
Q: Is it compatible with Cisco’s zero-touch SD-WAN workflows?
A: Yes. Preloaded with Cisco IOS XE SD-WAN, it supports vManage templating and automated VPN orchestration. Unique to this model, PoE port prioritization aligns with SD-WAN policies—e.g., ensuring VoIP handsets retain power during brownouts.
Feature Comparison: C1121-4PLTEPPM vs. C1117-4PM
| Criteria | C1121-4PLTEPPM | C1117-4PM |
|---|---|---|
| PoE Budget | 120W (4x 30W) | 300W (4x 60W) |
| LTE Support | Embedded Cat 18 modem | Requires external module |
| SD-WAN Throughput | 500 Mbps (IPsec) | 7 Gbps |
| Target Use Case | Small retail, clinics | Mid-sized campuses |
Why Deploy the C1121-4PLTEPPM?
This router eliminates the complexity of managing separate PoE switches and LTE failover devices. Its unified management via Cisco DNA Center reduces operational overhead, while front-panel diagnostic LEDs accelerate troubleshooting in resource-constrained sites.
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Field Perspective
Deploying the C1121-4PLTEPPM in a pharmacy chain’s telehealth kiosks, the embedded LTE ensured uninterrupted video consultations during broadband outages. While its PoE budget can’t match higher-tier models, the integration of power, WAN diversity, and compact form factor proved invaluable for sites where space and IT expertise are limited. For SMBs, it’s a reminder that “enterprise-grade” can coexist with “plug-and-play” when designed thoughtfully.