Cumulus Linux

The world’s most flexible network operating system

Cumulus Linux is a powerful open network operating system that allows you to automate, customize and scale using web-scale principles like the world's largest data centers.

Why choose Cumulus Linux

Cumulus Linux is the only solution that allows you to affordably build and efficiently operate your network like the world’s largest data center operators, unlocking vertical network stacks.

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50+ hardware platforms

Choose compatible hardware based on your needs and your budget

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Faster IT delivery

with native integration and best-of-breed tools for automation, monitoring, analytics and more

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Network protection

with industry-standard security features plus added precautions exclusive to Cumulus Linux

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Flexible open architecture

that allows you to customize your network and scale seamlessly

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Reduced Capex

by lowering the cost of acquiring open switches and optics

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Reduced Opex

by leveraging existing talent and assigning more switches per engineer

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Built for automation first

Enjoy networking that’s consistent and repeatable

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Complete standardization

With Linux across the entire data center, you’ll reduce complexities and get complete interoperability

What network challenge are you facing?

What you get with Cumulus Linux

Technology we innovated in-house to make your life easier:

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OSPF Unnumbered

Create configs faster by no longer depending on unique IP addresses, which simplifies automation.

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BGP Unnumbered

Automation gets even easier with this simplified IP approach. All you need is one IP template for leaf nodes and one for the spine nodes. Easy, right?

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Redistribute Neighbor

Get VM and host mobility by plugging in your server into any RDNBR switch making it L3 discoverable on the fabric. If you have any need to move the server, there’s no need to reconfigure.

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Prescriptive Topology Manager (PTM)

Efficiently go from whiteboard to physical cable. With PTM, you can program your data center to verify connections and resolve issues faster.

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Virtual Routing and Forwarding

Run multiple network paths without the need for multiple switches, giving you traffic isolation and network segmentation for multiple devices.

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Lightweight Network Virtualization (LNV)

Accelerate VXLAN deployments with a controllerless solution.

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Ethernet Virtual Private Networks (EVPN)

Get freedom from L2 complexities with this modern, standards-based, interoperable technology that allows legacy layer 2 applications to operate over next-generation Layer 3 networks. Learn more about EVPN.

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Network Command Line Utility (NCLU)

Use our rich and simple command line for easy network configuration and operation.

Plus standard technology that we’ve improved:

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Unlock the stack with open architecture using a Linux operating model

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Native security

From OpenSSH to authentication, Cumulus Linux keeps your switches secure

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Hardware your way

Launch fully-loaded with Cumulus Express or choose from our 50+ hardware partners

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Unified stack

With a unified operating model across compute and network, you'll reduce complexities and get guaranteed interoperability

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Software driven

Our software writes directly to the silicon giving you a software driven and hardware accelerated approach.

Prefer to try before you buy? Try Cumulus Linux for free with Cumulus VX.

Learn more about Cumulus Linux