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Product Line: Mellanox Technologies
Product Type: Switch
Original price $0.00 - Original price $18,704.00
Original price
$0.00 - $18,704.00
Current price $18,704.00
Title: Used

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Product Description

The SX6518 Mellanox Technologies switch features a 16U modular chassis with 18 QSFP InfiniBand ports per blade, delivering speeds of up to 56Gb/s per QSFP and an aggregate data throughput of 36.3 Tb/s. It supports a port latency range of 170ns to 510ns, up to 8 switch partitions, and offers a 4x48K entry linear forwarding table with QSFP+ connectors that are SFF-8436 and INF-8438i compliant. Designed for efficiency and scalability, it includes 1.6KW hot swappable power supply units with N+N redundancy, operates within a temperature range of 10°C to 45°C, and complies with RoHS-6 standards, featuring hot-swappable fan trays for optimal cooling.

Key Feature for the SX6518

  • What is the maximum data throughput of the 16U modular chassis?
    The maximum data throughput is 36.3 Tb/s.
  • How many QSFP InfiniBand ports does each blade support, and what is the maximum speed per QSFP?
    Each blade supports 18 QSFP InfiniBand ports, with speeds up to 56Gb/s per QSFP.
  • What is the range of port latency for the system?
    Port latency ranges from 170ns to 510ns.
  • Can you describe the power requirements for the 16U modular chassis?
    The chassis requires 1.6KW hot swappable units with N+N slots for redundancy, operating at an input range of 90-264VAC and a frequency of 47-63Hz, single phase AC.
  • What types of cables are supported by the QSFP+ connectors?
    The QSFP+ connectors support passive copper or active fiber cables and are SFF-8436 and INF-8438i compliant.
  • What are the environmental operating conditions for the chassis?
    The operating temperature ranges from 10°C to 45°C, with a humidity range of 10-90% non-condensing.
  • What is the weight of the chassis in its empty, shipped, and full configurations?
    The chassis weighs 90kg in its empty configuration, 112kg when shipped, and 212.36kg when fully configured.
  • Does the chassis support adaptive routing and congestion control?
    Yes, the chassis supports both adaptive routing and congestion control.
  • What is the size of the linear forwarding table?
    The linear forwarding table has 4x48K entries.
  • Are the fan trays and power units hot-swappable?
    Yes, the chassis features hot-swappable fan trays and power units.

Product Review

The Mellanox Technologies SX6518 switch offers high performance with an aggregate data throughput of 36.3 Tb/s and low port latency ranging from 170ns to 510ns, making it suitable for environments requiring rapid data processing and transfer. However, its significant heat output of 15,378 BTUs/hr and a weight that can reach up to 212.36kg in full configuration may pose challenges for deployment in constrained spaces or environments with limited cooling capabilities. Additionally, the switch supports adaptive routing and congestion control, enhancing network efficiency and reliability, but its reliance on QSFP+ connectors and the need for specific fiber media adapters could limit flexibility in mixed-hardware environments.


The Mellanox Technologies SX6518 is a high-performance networking switch designed for efficiency and scalability in data center environments. Its 16U modular chassis houses advanced features and capabilities to meet the demands of extensive networking tasks. This product overview focuses on the hardware specifications that make the SX6518 a critical component for managing and routing high volumes of data traffic. At the core of the SX6518's design are 18 QSFP InfiniBand ports per blade, supporting speeds up to 56Gb/s per QSFP. This allows for an aggregate data throughput of 36.3 Tb/s, facilitating rapid data transfer and processing across the network. The switch's port latency ranges from 170ns to 510ns, ensuring efficient data flow with minimal delay. The SX6518 supports up to 8 switch partitions, providing flexibility in network segment management. It accommodates a variable Maximum Transmission Unit (MTU) size from 256 to 4Kbyte, enhancing its adaptability to different data types and sizes. Key features such as adaptive routing and congestion control optimize network performance and reliability by automatically adjusting routes and managing traffic to prevent bottlenecks. A significant aspect of the SX6518 is its large linear forwarding table, with 4x48K entries, enabling efficient data packet forwarding and routing. The switch utilizes QSFP+ connectors, compliant with SFF-8436 and INF-8438i standards, supporting both passive copper and active fiber cables, as well as fiber media adapters, to facilitate diverse connectivity options. For monitoring and management, the SX6518 is equipped with per-port status LEDs for Link and Activity, along with a Port Error LED, providing immediate visual feedback on network status and issues. The hardware's power infrastructure is designed for reliability, with 1.6KW hot-swappable units and N+N slots for redundancy, operating within a 90-264VAC input range and a 47-63Hz frequency. This ensures uninterrupted operation, even in demanding conditions. The SX6518 operates efficiently within a temperature range of 10°C to 45°C and a humidity range of 10-90% non-condensing, meeting RoHS-6 compliance for environmental consideration. Maintenance and upgrades are simplified with hot-swappable fan trays, ensuring minimal downtime and continuous operation. The switch's heat output is 15,378 BTUs/hr, indicating its power efficiency and cooling requirements. Weighing 90kg (199 lbs) in an empty configuration and 212.36kg (468 lbs) when fully configured, the SX6518 is built for durability and stability in rack installations. The shipped configuration weight is 112 kg (247 lbs), accounting for secure packaging and protection during transit. - FDR 10 Max, ensuring compatibility with high-speed data transfer standards. - Hot-swappable fan trays and power units, promoting easy maintenance and uninterrupted service. - RoHS-6 compliant and designed with an environmental focus, reflecting a commitment to reducing hazardous substances in electronic products. The Mellanox Technologies SX6518 stands out as a powerful and versatile networking switch, capable of accommodating the complex data management and routing needs of modern data centers.


Item NumberMellanox Technologies SX6518
ManufacturerMellanox Technologies
Chassis Type16U, Modular
Port Configuration18 QSFP InfiniBand Ports per Module, Maximum 56Gb/s per QSFP
Total Bandwidth36.3 Terabits per second
Latency Range170 to 510 nanoseconds
Switch PartitionsSupports up to 8
MTU Size Range256 Bytes to 4096 Bytes
Routing CapabilityAdaptive
Congestion ManagementIntegrated Control
Forwarding Database192K Entries Across 4 Tables
Connector TypeQSFP+ (Complies with SFF-8436 and INF-8438i)
Cable SupportPassive Copper, Active Fiber
Media InterfaceFiber Optic Adapters
Indicators per PortLink and Activity LEDs
Error IndicatorPort Error LED
Power Supplies1.6KW, Hot-Swappable, N+N Redundant Configuration (220VAC)
Voltage Input90-264VAC
AC Frequency47-63Hz, Single Phase
Minimum Operating Temperature10°C
Maximum Operating Temperature45°C
Humidity Tolerance10-90%, Non-Condensing
Environmental ComplianceRoHS-6
Cooling MechanismHot-Swappable Fan Units
Maximum Data RateFDR 10
Thermal Output15,378 BTUs per hour
Weight (Empty)90 kg (199 lbs)
Weight (Shipped)112 kg (247 lbs)
Weight (Full Configuration)212.36 kg (468 lbs)

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