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Mellanox Networking Switches

Mellanox networking switches direct data traffic between multiple devices, and sends data only where it needs to go. Now part of NVIDIA, Mellanox's Spectrum switch portfolio is a purpose-built data centre range, and is widely deployed in cloud, high-performance computing, AI, and enterprise data centre environments worldwide.

At ITinStock, we stock a range of high-quality new and refurbished Mellanox networking switches, from the proven Spectrum SN2000 Series 25GbE and 100GbE top-of-rack switches through to the high-performance Spectrum-2 SN3000 and Spectrum-3 SN4000 Series for demanding leaf, spine, and super-spine deployments at speeds up to 400GbE.
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Benefits of Mellanox Networking Switches

A defining characteristic of Mellanox switches is their Open Ethernet approach, which gives network teams a genuine choice of operating system. One of the standout advantages of Mellanox switches is flexibility in how you manage them. For example, every Mellanox Spectrum switch lets you choose the software that suits your team, meaning you’re not tied to a single vendor's way of doing things.

Mellanox Spectrum switches are also built for reliable, high-performance data centre use. They deliver full-speed data transfer with no packet loss even under heavy load, which makes them a strong choice for AI, machine learning, and storage workloads where dropped packets directly hurt application performance. For redundancy, two switches can be paired so that if one fails, traffic keeps flowing without interruption. All routing and switching features come included out of the box too, making Mellanox networking switches accessible for a wide range of user types.

Why Refurbished Mellanox Networking Switches from ITinStock?

At ITinStock, we are happy to discuss any bespoke configurations for your Mellanox networking setup, whether that's a specific port speed, airflow direction, redundant power supply configuration, or operating system pre-installed. Each of our refurbished Mellanox switches undergoes rigorous testing, in which all ports are verified for connectivity and throughput, firmware is checked and updated where required, and each unit is reset to factory defaults before dispatch. We can deliver quickly to the UK and worldwide using our courier partners. Our expert support team are on hand to help with any pre-sales questions and compatibility queries you may have.

Complement Your Mellanox Network Setup

Maximise your networking with these complementary IT components:

  • Components Whether you’re in need of CPU, memory (RAM) or RAID controllers, we have plenty of IT components to complement the server your Mellanox network switch will be connected to.
  • Network Transceivers Take a look at compatible SFP, SFP+, QSFP+, and QSFP28 transceivers and DAC cables for copper and fibre connectivity at 10GbE, 25GbE, 40GbE, and 100GbE speeds.
  • UPS Systems Protect your network investment with an Uninterruptible Power Supply to ensure continuous connectivity during power disruptions.

Frequently Asked Questions

What Mellanox networking switch series do you stock?
Our refurbished Mellanox switch range spans the Spectrum, Spectrum-2, and Spectrum-3 generations.

In the SN2000 Series, the SN2010 provides an 18-port 25GbE plus 4-port 100GbE half-width 1U option well suited to smaller deployments, the SN2100 provides 16 ports of 100GbE in a compact 1U chassis, and the SN2410 and SN2700 provide 48-port 25GbE and 32-port 100GbE configurations respectively for standard top-of-rack deployments.

In the Spectrum-2 SN3000 Series, the SN3420 and SN3800 offer dense 25GbE and mixed 100GbE and 400GbE configurations for high-performance leaf and spine roles.

In the Spectrum-3 SN4000 Series, the SN4600 and SN4700 support up to 64 and 32 ports of 400GbE respectively, designed for spine and super-spine roles in cloud-scale and AI data centre fabrics.

What is RoCE, and which Mellanox switches support it?
RoCE stands for RDMA over Converged Ethernet. RDMA (Remote Direct Memory Access) allows one server to read from or write directly to the memory of another server without involving either server's CPU or operating system, which dramatically reduces latency and CPU overhead for workloads that transfer large amounts of data rapidly between nodes. RoCE brings this capability to standard Ethernet networks, making it particularly important for AI and machine learning training clusters (where GPU nodes exchange large model gradients between each other continuously), NVMe over Fabrics storage environments, and high-performance computing.

All Mellanox Spectrum switches support lossless Ethernet for RoCE using Priority Flow Control (PFC) and Explicit Congestion Notification (ECN), both of which are required to prevent packet drops that would otherwise degrade RoCE performance. Mellanox Spectrum switches are designed to pair with Mellanox ConnectX NICs in the servers, which provide the RDMA capability at the host side for a complete end-to-end RoCE fabric.

What environments are Mellanox switches suitable for?
Mellanox Spectrum switches are designed and optimised specifically for data centre environments. They are fixed-configuration, 1U or 2U rack-mount switches with QSFP and SFP28 ports for fibre connectivity, and they do not support Power over Ethernet or the copper RJ45 access ports typically needed for connecting end-user devices, IP phones, and wireless access points in office and campus environments. They are best suited to roles such as top-of-rack server connectivity, storage fabric interconnect, spine-and-leaf data centre fabrics, and HPC or AI cluster networking. If you are looking for switches for an office, branch, or campus environment with PoE and copper access ports, our Cisco, HPE Aruba, Juniper, or Dell networking switch ranges would be more appropriate.

Does ITinStock offer warranty on refurbished IT equipment?
Yes. All our refurbished IT equipment - servers, storage, networking and components, are thoroughly inspected and tested before dispatch to make sure they function as intended. In the event that any equipment develops a fault or arrives damaged through no fault of the customer, we offer a 3-year warranty on all refurbished equipment covering repair or replacement. Please speak with our account managers and customer service team for full warranty terms and conditions.

Find Your Ideal Mellanox Networking Switch Today

Browse our complete range of refurbished Mellanox networking switches or contact our team for expert advice on selecting the right switch for your infrastructure.

Phone: +44 (0)20 4631 3555
Email: hello@itinstock.com

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