Explore the state of SRv6 and how it enhances all Segment Routing MPLS capabilities.


Segment Routing provides complete control over the forwarding paths by combining simple network instructions. It does not require any additional protocol. Indeed in some cases it removes unnecessary protocols simplifying your network.


Segment routing does not require any path signaling. Hence, per-flow state only needs to be maintained at the ingress node of the SR domain increasing your network flexibility while reducing cost.

Seamless deployment

Segment Routing runs natively on an MPLS or IPv6 data plane. A simple software upgrade will enable your hardware to run it. Also, Segment Routing can coexist with your existing LDP network, making the migration painless.

Segment Routing will boost your business in 5 key ways

Segment Routing emerged as a new technology in 2013 and has made a huge impact with service providers, hyper-scale web providers and large enterprises. As a key enabler for the transformation all networks must go through in the future, it’s no wonder that adoption is growing exponentially. But what will it actually do for your business?

Simplify your network

Removing protocols and making network operations easier means Segment Routing is your fast track to network simplification.

Make the network more robust

With Segment Routing, your network is more resilient. Whenever and wherever a node or a link fails in the network, connectivity is restored in under 50 milliseconds!

Squeeze more out of your network

Hyperscale cloud providers have learned that by dynamically rerouting traffic, they can reach an overall capacity utilization of 80 percent or more.

Release innovation

Segment Routing powers two vital network services:low-latency and disjointness.

Offer new levels of customer satisfaction

With an efficient network structure, you have a strong foundation on which to offer a best-in-class end-user experience.

“Segment Routing is fundamental for today’s reality, which requires on-demand services as well as exponential bandwidth growth. Streamlining the IP protocols stack in order to provide a simplified service assurance support model for day-to-day is the key benefit.”

Bell Canada’s Technical Fellow Daniel Voyer

“Micro-loops have always been a pain for networks by breaking fast-reroute or creating micro-congestions. Now, thanks to the Segment Routing building blocks, we have the technology to easily build loop free paths in the network in a simple way.”

Orange Group’s Stephane Litkowski

“It gives us network independence, we don’t need to write our proprietary agent for every box we want to buy, we get to use standard IGP to set up our connectivity instead of having to do that ourselves. Segment Routing lets you program only the edge. We don’t have the problem of tunnel setup synchronization; the network configures itself.”

Microsoft’s Senior Software Engineer Paul Mattes

“SoftBank keeps focusing on improving service quality and enhancing the reliability and agility of networks while reducing costs. Cisco’s advanced network technologies and support have allowed us to establish the next-generation mobile IP core network platform that meets the bandwidth demand.”

SoftBank Corp’s Senior Vice President, Keiichi Makizono

“Segment Routing architecture brings us many benefits – first, it can be easily deployed in our existing network infrastructure; second, the ability to have fine-grain control over how the network transports applications while being stateless meets our elasticity requirements. It helps us to deliver a better end-user experience.”

Alibaba Group’s Chief Network Architect Dennis Cai

Discover SRv6

Discover SR MPLS

Segment Routing book series

Part I by Clarence Filsfils, Kris Michielsen and Ketan Talaulikar walks the reader through the journey that led to the invention Segment Routing. Besides describing the SR functionalities, it also describes the intuition behind the key concepts and explains why it was designed this way.

Available on Amazon as paperback or Kindle editions.

Part II by Clarence Filsfils, Kris Michielsen, François Clad and Daniel Voyer explains how Segment Routing has changed the game of Traffic Engineering in Service Provider and Enterprise networks by finding the right balance between distributed intelligence and centralized control.

Available on Amazon as paperback or Kindle editions.