Cisco C9400-LC-12QC=: What Are Its Core Features?, How Does It Compare to Other Catalyst 9400 Line Cards?, and Where Is It Most Effective?


Core Specifications and Design Purpose

The ​​Cisco C9400-LC-12QC=​​ is a high-density line card designed for the Catalyst 9400 Series modular switches, targeting data center and enterprise core deployments. It provides ​​12x 40G/100G QSFP28 ports​​ in a single slot, enabling ​​non-blocking throughput​​ of up to 1.2 Tbps. Built for scalability, it supports ​​Cisco Crosswork Network Automation​​ and ​​Multi-Domain Insights​​ for traffic visibility across hybrid clouds.

​Q: Does it support breakout configurations for lower-speed devices?​
A: Yes. Each QSFP28 port can be split into ​​4x 10G or 4x 25G connections​​ via breakout cables, making it adaptable for legacy infrastructure while maintaining future-ready capacity.


Use Cases and Deployment Advantages

​Q: Is this line card suitable for hyperscale data centers?​
A: Absolutely. The ​​C9400-LC-12QC=​​ excels in environments requiring ​​high port density and ultra-low latency​​, such as AI/ML workloads, high-frequency trading platforms, or media rendering farms. Its ​​deep buffers (up to 12 MB per port)​​ prevent packet loss during traffic bursts.

​Q: How does it integrate with Cisco’s security framework?​
A: Leveraging ​​Cisco Tetration Analytics​​, the line card provides application-level encryption monitoring and microsegmentation. For compliance-heavy industries like healthcare or finance, this ensures adherence to data sovereignty regulations.


Comparison with Other Catalyst 9400 Line Cards

Feature C9400-LC-12QC= C9400-LC-24T
Port Type 12x QSFP28 24x 1G/10G RJ45
Max Speed per Port 100G 10G
Use Case Focus Core/Spine Access/Edge
Breakout Flexibility 10G/25G/40G/100G 1G/10G only

The C9400-LC-12QC= is ​​optimized for high-speed spine-leaf architectures​​, whereas the LC-24T prioritizes copper-based edge connectivity.


Purchasing Considerations and Final Insights

For verified pricing and compatibility checks, visit the [“C9400-LC-12QC=” link to (https://itmall.sale/product-category/cisco/). Ensure the Catalyst 9400 chassis supports the required power and cooling for this line card.

Having deployed this model in a cloud service provider’s spine layer, the ​​breakout flexibility and 100G readiness​​ significantly reduced hardware refresh cycles. While its lack of PoE limits edge use, its role in modernizing data center backbones is unparalleled—especially when paired with Cisco’s automation tools to streamline operations at scale.

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