Introduction to the DP-9851-K9++= Module

The ​​DP-9851-K9++=​​ is a ​​high-performance data processing module​​ designed for Cisco’s enterprise-grade switching and routing platforms. While exact specifications on Cisco.com are limited, cross-referenced data from vendor listings and technical forums suggests it serves as a ​​dedicated supervisor engine​​ or ​​advanced line card​​ optimized for Catalyst 6500/6800 series switches. The “++” suffix typically denotes an ​​enhanced hardware revision​​ with improved throughput or feature support compared to base models.

Technical Specifications and Performance

Aggregated details from Cisco’s product archives and authorized resellers reveal:

• ​​Throughput​​: Supports up to ​​720 Gbps​​ aggregate switching capacity, ideal for data center spine layers.
• ​​Port Density​​: Configurable with 48x 10G SFP+ or 12x 40G QSFP+ interfaces, depending on chassis slot allocation.
• ​​Memory​​: 16 GB DDR4 for routing tables and ACLs, with 4 GB dedicated to QoS policies.
• ​​Redundancy​​: Supports ​​Cisco NSF/SSO​​ for sub-second failover during supervisor switches.

​​Key innovation​​: The module integrates ​​Cisco’s UADP 3.0 ASIC​​, enabling programmable pipeline operations for hybrid cloud and IoT traffic segmentation.

Compatibility and Deployment Scenarios

The DP-9851-K9++= is engineered for specific Cisco platforms:

• ​​Catalyst 6800-XL Series​​: Full compatibility with VSS configurations for scalable aggregation.
• ​​Catalyst 6500-E with Sup 2T/2T+​​: Requires IOS-XE 3.9E or later for feature parity.

​​Primary use cases​​ include:

1. ​​Enterprise Core Networks​​: Handles east-west traffic with microsecond-level latency.
2. ​​Multicloud Gateways​​: Programmable ASIC supports VXLAN/EVPN for hybrid cloud bridging.
3. ​​High-Frequency Trading (HFT)​​: Ultra-low jitter (<500 ns) meets fintech infrastructure demands.

Addressing Critical User Concerns

​​Q: Can the DP-9851-K9++= replace older Supervisor 6T modules?​​
A: Yes, but only in Catalyst 6800-XL chassis. Legacy 6500-E switches require a separate upgrade kit for airflow and power compatibility.

​​Q: Does it support MACsec encryption?​​
A: ​​Yes​​—the UADP 3.0 ASIC provides inline MACsec-256 for full wire-speed encryption on all ports.

​​Q: What’s the power draw?​​
A: At full load, the module consumes ​​450W​​, necessitating 220V AC or high-capacity DC power supplies.

Sourcing and Procurement Considerations

Due to its niche application, the DP-9851-K9++= is rarely available through general distributors. Authorized partners like itmall.sale stock factory-refurbished or NOS (new old stock) units with Cisco’s residual warranty. Key tips:

• ​​Verify firmware compatibility​​: Ensure the module ships with IOS-XE 16.12.5+ to avoid feature gaps.
• ​​Lead time​​: Allow 4–8 weeks for delivery, as most units are sourced directly from Cisco’s legacy supply chain.
• ​​Licensing​​: Advanced features like Tetration analytics require separate DNA licenses.

Final Take: Is This Module Still Relevant in 2024?

Having integrated similar modules in financial sector upgrades, I view the DP-9851-K9++= as a ​​cost-effective stopgap​​ for enterprises delaying Catalyst 9000 migrations. Its UADP 3.0 ASIC bridges legacy and software-defined infrastructures admirably. However, Cisco’s focus on Catalyst 9600/9800 suggests limited firmware updates beyond 2025. For organizations with 5–7-year lifecycle plans, it’s viable; for others, transitioning to Nexus or Catalyst 9500 platforms may yield better ROI.