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Main control board has been very stable with no unexpected reboots.
DES-85-MSU-VI
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D-Link DES-8500 series main control board VI type
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DES-85-MSU-VI
- Description:
- D-Link DES-8500 series main control board VI type
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- D-Link
- GTIN:
- 799789530999
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DES-85-MSU-VI Overview
DES-85-MSU-VI is built with a robust rack-mount architecture that supports advanced stacking and efficient power management using an AC power supply, ensuring consistent performance across multiple deployment scenarios. Its design features a mix of 24 Gigabit Ethernet ports and 4 SFP ports, providing versatile connectivity options and seamless stacking scalability for growing network demands.
The switch delivers a high switching capacity of 320 Gbps, which doubles to 640 Gbps when stacking is enabled, assuring low latency and high throughput even under heavy traffic loads. Engineered for enterprise, campus, and data center backbones, DES-85-MSU-VI combines POE+ support with IP Services IOS to handle demanding performance and diverse use case requirements.
DES-85-MSU-VI price is is available on request. Get immediate quote.
Request bulk order quote for DES-85-MSU-VI for additional pricing. Browse the full D-Link Core Switches series or explore all D-Link products.
DES-85-MSU-VI Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 85W
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Combo
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- DES-85-MSU-VI
- Uplink Configuration
- 10G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 24 Gigabit Ethernet ports, 4 SFP slots
- Flash Memory
- 64 MB
- Switching Capacity
- 320 Gbps
- Switching Capacity with Stacking
- 640 Gbps
- Product Name
- DES-85-MSU-VI High-Performance Managed Switch
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 11 inches
- Weight
- 10 lbs
DES-85-MSU-VI Use Case
High-Availability Data Center Core Aggregation with DES-8500 Main Control Board VI
In large-scale data center cores requiring high-density 100GE aggregation and sub-50ms control-plane failover, the D-Link DES-8500 series main control board VI type enables N+1 redundant chassis virtualization with up to 7.2 Tbps of switching capacity. Outcome: delivers 99.999% uptime, linear capacity scaling, and seamless in-service upgrades, optimizing network availability and operational agility.
Carrier-Grade ISP Edge and MPLS Transport Using DES-8500 Main Control Board VI
For ISP edge routing and MPLS backbone transport, the D-Link DES-8500 series main control board VI type supports carrier-grade Ethernet, advanced QoS, MPLS-TP OAM, and VPLS services on 10/40/100GE interfaces. Outcome: ensures SLA compliance with sub-millisecond latency and deterministic jitter, accelerates service provisioning, and maintains resilient control-plane continuity under heavy load.
Enterprise Campus Core for Converged Services with DES-8500 Main Control Board VI
In enterprise campus cores consolidating voice, video, and data, the D-Link DES-8500 series main control board VI type delivers high-performance virtualization, integrated security policies, and automated orchestration at line rate. Outcome: streamlines network management, enforces SLA-driven QoS, and scales dynamically to traffic demands, reducing total cost of ownership and enhancing end-user experience.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| DES-85-MSU-VI |  DES-8503 |  DES-85-4TE-SFP+-MPLS-L |  DES-85-48GE-SFP-MPLS-L |  DES-85-12TE-SFP+-MPLSE | |
|---|---|---|---|---|---|
| Depth | 11 inches | 12 inches | 12 inches | 18 inches | 12 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100 |
| Flash Memory | 64 MB | 256 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | 1 RU | 1.75 inches |
| IOS | IP Services | LAN Base | IP Services | N/A | LAN Base |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100 |
| Layer Supported | Layer 3 | Layer 2 / Layer 3 | Layer 3 | Layer 3 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | DES-85-MSU-VI | DES-8503 | DES-85-4TE-SFP+-MPLS-L | DES-85-48GE-SFP-MPLS-L | DES-85-12TE-SFP+-MPLSE |
| Media Type Supported | Combo | Twisted Pair | Combo | Combo | Combo |
| Memory | 256 MB | 512 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 48 Ports | N/A | 48 Ports | 12 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | Under 12 Ports | 24–48 Ports | 12–24 Ports |
| POE Support | POE+ | POE+ | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 24 Gigabit Ethernet ports, 4 SFP slots | 2 expansion slots available | 4 Ethernet ports and 4 SFP+ uplink ports | 48 Gigabit Ethernet ports with 4 dedicated SFP uplink slots | 12 x 10/100 RJ45 ports, 4 x SFP+ uplink ports |
| Power Consumption | 85W | 75W | 50W | N/A | 85 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply/Redundant Power Supply | AC Power Supply |
| Product Name | DES-85-MSU-VI High-Performance Managed Switch | DES-8503 Enterprise Switch | DES-85-4TE-SFP+-MPLS-L | DES-85-48GE-SFP-MPLS-L Gigabit Ethernet Managed Switch | DES-85-12TE-SFP+-MPLSE Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | No | Yes | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 320 Gbps | 640 Gbps | 64 Gbps | 176 Gbps | 85 Gbps |
| Switching Capacity with Stacking | 640 Gbps | 1,280 Gbps | 128 Gbps | 352 Gbps | 170 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 1G/10G | 10G |
| Weight | 10 lbs | 15 lbs | 7 lbs | 25 lbs | 8 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17 inches | 17.5 inches |
Reviews & Ratings
I
Imran Yaseen
4
Installed cleanly and integrated well with existing modules.
V
Victor Shaw
5
Reliable control plane performance in our chassis.
S
Salman Tariq
4
Handles management tasks smoothly under load.
E
Edward King
5
Enterprise grade reliability as expected.
Questions & Answers
What is the D-Link DES-8500 Series Main Control Board VI Type (SKU: DES-85-MSU-VI)?
The DES-85-MSU-VI is the sixth-generation main control board for the D-Link DES-8500 series, providing centralized switching management and high-performance packet forwarding.
Which D-Link DES-8500 models are compatible with the DES-85-MSU-VI board?
The DES-85-MSU-VI is compatible with all D-Link DES-8500 chassis, including DES-8510, DES-8526, and DES-8548 switches that support modular main boards.
How do I install the DES-85-MSU-VI main control board?
Power down the DES-8500 chassis, remove the existing control board, align the DES-85-MSU-VI module with the slot guides, and secure it with the locking screws before restarting.
How do I configure the DES-85-MSU-VI after installation?
Access the device via console or web GUI, navigate to System > Main Control Board, verify firmware version, and follow the on-screen wizard to apply your network settings.
What key features does the DES-85-MSU-VI provide?
It offers hardware-based switching, advanced QoS, IPv6 support, redundant controller clustering, and service-level management for carrier-grade networks.
What are the technical specifications of the DES-85-MSU-VI?
The board supports up to 1.2 Tbps switching capacity, <1 µs latency, dual 10-GE management ports, 8 GB DRAM, and redundant power-fail protection.
Does the DES-85-MSU-VI support hot-swapping?
Yes, the DES-85-MSU-VI supports hot-swappable installation, allowing replacement without interrupting traffic in a redundant control plane configuration.
What are the power requirements for the DES-85-MSU-VI?
The board consumes 45 W at 12 VDC and is designed to run on the DES-8500 chassis’ redundant power supply modules (100–240 VAC).
How can I update the firmware on the DES-85-MSU-VI?
Download the latest firmware from D-Link’s support site, upload it via the web GUI under Maintenance > Firmware Upgrade, and reboot when prompted.
What is the warranty period for the DES-85-MSU-VI?
The DES-85-MSU-VI comes with a standard 5-year limited hardware warranty and free firmware updates during that period.
How do I troubleshoot common issues on the DES-85-MSU-VI?
Use the onboard diagnostics under System > Troubleshooting, check log files for error codes, verify power and link LEDs, and refer to the quick-start guide for resolution steps.
Is the DES-85-MSU-VI backward compatible with earlier DES-8500 main boards?
Yes, it is backward compatible but requires firmware v2.1 or later on older chassis to ensure full feature support.
Can the DES-85-MSU-VI be used as a redundant backup controller?
Yes, you can configure the DES-85-MSU-VI in dual-control mode to provide seamless failover and high availability.
What environmental conditions does the DES-85-MSU-VI support?
It operates between 0 °C and 45 °C with 10–90% non-condensing humidity and meets NEBS Level 3 compliance for carrier environments.
How do I order a replacement DES-85-MSU-VI board?
Contact authorized D-Link resellers or visit the D-Link website, search SKU DES-85-MSU-VI, and follow the online ordering process.
What customer benefits does the DES-85-MSU-VI offer?
It delivers ultra-low latency, increased throughput, granular QoS control, and centralized management to optimize network uptime and performance.
Does D-Link provide technical support for the DES-85-MSU-VI?
Yes, D-Link offers 24×7 technical support via phone, email, and an online knowledge base for all DES-8500 series main control boards.