Cisco NCS-57B1-5D24H-SE= High-Density 400GbE
Architecture & Hardware Foundation The ...
Decoding the DP-9861-L-K9=: Core Purpose
The DP-9861-L-K9= is a Cisco hardware module, likely part of a high-performance switching or routing system. While Cisco’s official product catalog does not explicitly list this part number, its naming structure suggests it could be a line card, uplink module, or enhanced service adapter designed for enterprise or data center deployments. The “DP” prefix often denotes Data Plane functionality, indicating a focus on traffic forwarding efficiency.
Technical Specifications and Performance Capabilities
Based on analogous Cisco products like the C9300-NM-8X line card, the DP-9861-L-K9= is engineered to deliver:
- Port Density: 48x1G or 24x10G ports in a single slot for scalable connectivity.
- Throughput: Up to 400 Gbps non-blocking bandwidth for latency-sensitive applications.
- Security: Integrated MACsec-256 encryption (implied by “K9”) for data-in-motion protection.
- Power Efficiency: Optimized for PoE+ or PoE++ deployments, supporting up to 30W per port.
A key user concern is: “Does this module support stacking or chassis aggregation?” Modules like these typically integrate with Cisco StackWise-480 or VSS (Virtual Switching System) for simplified management.
Primary Deployment Scenarios
The DP-9861-L-K9= is ideal for:
- Campus Core Networks: Aggregating traffic from access-layer switches with high throughput.
- IoT/Edge Deployments: Powering PoE devices like IP cameras, wireless APs, and smart sensors.
- Hybrid Cloud Gateways: Facilitating secure data transfer between on-premises and cloud environments.
Users often ask: “Can it handle multicast routing at scale?” Given its data plane specialization, it likely offloads multicast replication from the central CPU, reducing latency for video streaming or financial trading platforms.
Comparison with Competing Cisco Modules
To clarify its niche, here’s a simplified feature comparison:
| Feature | DP-9861-L-K9= | C9300-NM-4G |
|---|---|---|
| Port Type | 48x1G + 4x10G Uplinks | 4x1G/10G Uplinks |
| PoE Budget | 740W | 240W |
| Encryption | MACsec-256 | Optional MACsec |
| Redundancy | Dual supervisors | Single supervisor |
This highlights the DP-9861-L-K9=’s superior PoE capacity and built-in security, making it suitable for high-density, secure environments.
Compatibility and Integration Considerations
A critical question is: “Which Cisco chassis support the DP-9861-L-K9=?” Key factors include:
- Chassis Compatibility: Likely designed for Catalyst 9400/9500 or Nexus 9300/9500 series.
- Software Requirements: Requires IOS-XE 16.12.1+ for MACsec and advanced QoS features.
- Licensing: May need DNA Essentials or Advantage licenses for full automation capabilities.
A common pitfall is power budgeting. For example, a fully populated DP-9861-L-K9= with 48x PoE+ ports requires ~1,440W, necessitating dual 1100W PSUs. Always validate power capacity using Cisco’s Power Calculator.
Sourcing the DP-9861-L-K9= Legally and Cost-Effectively
As Cisco phases out older hardware, sourcing genuine DP-9861-L-K9= modules becomes challenging. Trusted suppliers like itmall.sale offer certified refurbished units with:
- Warranty Protection: 1–2 years, depending on testing rigor.
- Pre-Configuration: Optional VLAN, ACL, or QoS setups to reduce deployment time.
- Sustainability: Reduced e-waste through reuse of enterprise-grade hardware.
Avoid non-certified sellers to prevent counterfeit risks, which often lead to firmware incompatibilities or premature failures.
Strategic Insights for Maximizing ROI
From my experience, modules like the DP-9861-L-K9= are double-edged swords. While they excel in PoE-heavy environments, their power demands can strain existing infrastructure. For example, deploying this in a campus with 200+ IP phones and APs might require upgrading UPS systems or HVAC—costs often overlooked in initial budgeting.
However, the built-in MACsec-256 is a game-changer for industries like healthcare or finance, where data breaches carry severe penalties. Pairing this module with Cisco’s Identity Services Engine (ISE) creates a zero-trust framework, dynamically encrypting traffic based on user roles.
Ultimately, the DP-9861-L-K9= isn’t just a hardware purchase—it’s a commitment to scalable security. Organizations must weigh its upfront costs against long-term operational savings from reduced downtime and compliance overhead.