Speed, Scale, Reliability and the Pursuit of Programmability

As networking moves from monolithic to disaggregated infrastructure, the necessity of programmability has become existential, be it physical or software-defined networks (SDN). A common thread runs through these movements: the need for control. As the notion of control continues to evolve, it will drive significant changes to the systems that form the foundations of the […]

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Why does the Enterprise Data Center need EVPN and VXLAN?

IT sits at the core of an enterprise’s digital transformation and bears the burden to provide an on-demand infrastructure that delivers high uptime and agility. The data center becomes the focal point from where this transformation begins and enterprise data center fabrics need to evolve to meet the evolving needs of the business.

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Is SD-WAN the new MPLS?

As SD-WAN adoption matures and moves from “peak of inflated expectation” to “slope of enlightenment”, a question that I hear and many technologist ponder over is whether SD-WAN is the new MPLS. If you asked this question to a distinguished engineer they would violently disagree at a technical level comparing the difference from an OSI […]

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The Network Reliability Engineer’s Manifesto

The industry is at a crossroads. And this isn’t just hyperbole – we as an industry have some decisions to make around what we stand for – as engineers, operators, and architects, and frankly, the people that (sometimes literally) keep the lights on. It’s time to have some real talk.

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Why is intent-based networking good news for software-defined networking?

In a previous blog post Cisco Engineering teams looked “under the hood” at intent-based networking. A common question we receive is: “What is the relationship of software-defined networking (SDN) to intent-based networking?”  In this blog we: Compare the model of SDN with intent-based networking: How are they different? What should you know? Share our point-of-view about […]

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Putting Reliability at the Forefront of Network Engineering

In March, I had the pleasure of co-presenting at Open Networking Summit about Network Reliability Engineering, and had several awesome discussions around the conference about the impact automation is having on our industry. How are we supposed to keep up with all of the SDN, NFV, Intent-based Networking, and automation news we see every day.

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The Collateral Damage of DDoS Attacks – Part 1. What is what

ISP networks are part of the backbone of the Internet—and carry any and every security threat. Most threats are not considered by the ISP, since they do not harm their own infrastructure, they are just another packet flow. While this is true for application-level and state-exhaustion DDoS attacks, ransomware infection, malware distribution, and so on, […]

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PwC research suggests change is coming: How will enterprises navigate?

In 2017, PwC conducted research with the primary objective of identifying what the major drivers in data center networking were. That research, made up of more than 250 responses from CIOs and IT leaders at large enterprises around the globe, suggested that the top priorities have shifted as IT charges towards cloud.

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