Speed, Scale, Reliability and the Pursuit of Programmability

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 network.

Software-defined Networking is an Essential Consideration for Successful IT Transformation

Software-defined Networking is an Essential Consideration for Successful IT Transformation

Making the switch to software-defined networking delivers significant business benefits and plays a key role in IT Transformation.

In the fifth of a series of blogs inspired by influential research published by industry analyst ESG, we discover the impact that software-defined networking can have on an organization’s IT Transformation efforts.

Is SD-WAN the new MPLS?

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 layer and packet/protocol formats perspective.

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

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 why this differentiation ultimately matters to our customers.

Putting Reliability at the Forefront of Network Engineering

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.

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

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, there are exceptions, such as volumetric DDoS attacks.

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

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.

PwC Research: The Cloud Will Block Out the Sun

PwC Research: The Cloud Will Block Out the Sun

PwC Research: The Cloud Will Block Out the Sun

Previously, I had posted a blog about the results of PwC research about the changing design criteria for data center networking. Follow-on blogs detailed the insights gleaned from that research. Namely, security has risen to the top position in IT priorities for data center networking, and automation is firmly entrenched as the number two.