PWR-VG420-650WAC= Power Supply Unit: Technica
Core Functionality and Design Philosophy The PWR-...
Introduction to the Cisco DP-9861-FS=
The Cisco DP-9861-FS= is a next-generation, high-density router engineered for enterprise and service provider networks requiring scalable bandwidth, advanced security, and seamless integration with SD-WAN architectures. Designed as part of Cisco’s ISR 900 series, this device supports mission-critical applications in hybrid cloud environments while optimizing operational efficiency through automation.
Technical Specifications and Hardware Capabilities
- Throughput: Up to 5 Gbps with services enabled (IPsec, QoS, NBAR).
- Ports: 16x 1G/10G SFP+ slots, 4x 40G QSFP+ uplinks, USB-C for 5G/LTE failover.
- Security: Cisco IOS-XE with Secure Boot, MACsec encryption, and Talos threat intelligence integration.
- Power Efficiency: 80 PLUS Platinum PSU with 1+1 redundancy and PoE++ (90W) on 8 ports.
- Scalability: Supports 2,000+ concurrent VPN tunnels and 200+ application-aware SD-WAN policies.
- Compatibility: Certified for Cisco Catalyst 9000 switches, ASAv firewalls, and Meraki MX appliances.
Key Features and Benefits
1. Multi-Gigabit SD-WAN Performance
The DP-9861-FS= leverages Cisco IOS-XE SD-WAN to prioritize latency-sensitive traffic (e.g., VoIP, video conferencing) across MPLS, broadband, and 5G links. In lab tests, it reduced packet loss for Microsoft Teams by 90% during network congestion.
2. Zero-Trust Security Architecture
Integrated Cisco Stealthwatch and Tetration Analytics provide microsegmentation for east-west traffic, while Encrypted Traffic Analytics (ETA) detects malware in SSL/TLS streams without decryption overhead.
3. Edge Compute Readiness
With PCIe slots for UCS-E series servers, the router supports IoT edge computing for real-time analytics in manufacturing and smart cities.
Addressing Critical User Concerns
Q: Can the DP-9861-FS= replace a core switch?
A: While it offers Layer 3 routing and VXLAN support, it’s designed for WAN edge roles. Pair it with Catalyst 9500 switches for campus/core duties.
Q: Is it backward-compatible with older Cisco routers?
A: Yes, via Cisco Crosswork Network Controller, which orchestrates legacy ISR 4000 and ASR 1000 devices alongside the DP-9861-FS= in hybrid SD-WAN deployments.
Q: How does it handle power redundancy?
A: The N+1 power supply option ensures 99.999% uptime, critical for hospitals, financial institutions, and industrial control systems.
Performance Comparison: DP-9861-FS= vs. Competing Routers
| Feature | Cisco DP-9861-FS= | Typical Enterprise Routers |
|---|---|---|
| VPN Capacity | 2,000+ tunnels | 500–1,000 tunnels |
| Encryption Throughput | 4.8 Gbps IPsec | 1–2 Gbps |
| Edge Compute | UCS-E integration | External servers required |
| Management | Cisco vManage + DNAC | CLI-only |
Deployment Best Practices
- Link Aggregation: Use 40G QSFP+ ports for spine-leaf connectivity in data centers, ensuring MLAG (Multi-Chassis LAG) for redundancy.
- Licensing: Activate Cisco DNA Premier for advanced telemetry and Cisco ThousandEyes for SaaS performance monitoring.
- Thermal Management: Deploy in front-to-back airflow racks with ambient temperatures below 35°C to prevent throttling.
For procurement, the DP-9861-FS= is available through itmall.sale’s Cisco networking portfolio, which includes lifecycle support and flexible financing.
Practical Insights from the Field
In a recent deployment for a global logistics provider, the DP-9861-FS= reduced latency for warehouse automation systems by 50% by prioritizing IoT sensor data over SD-WAN. However, initial setup required significant tuning of Application-Aware Routing Policies to avoid misclassification of legacy ERP traffic. While competitors like Juniper and Aruba offer lower upfront costs, Cisco’s Full Stack Observability with AppDynamics integration justified the investment through faster mean-time-to-resolution (MTTR).
One underrated feature is its USB-C 5G modem support, which provided failover during a fiber cut at a remote site, saving an estimated $250K in downtime costs. For enterprises navigating cloud migrations, the router’s ability to host AWS Outposts and Azure Stack edge nodes eliminates the need for separate compute hardware. That said, organizations without dedicated network automation teams may struggle to exploit its full potential—partnering with Cisco-certified integrators is often essential.