DC Fabric Segment Routing Use Case (2)

28 July 2016 |

In the first post we covered a bit of the basics around segment routing in the data center. Let’s return to the first use case to see if we can figure out how we’d actually implement the type of traffic steering needed to segregate mouse and elephant flows. Let’s return to our fabric and traffic…

On the ‘net: What does a control plane do?

21 July 2016 | Comments Off on On the ‘net: What does a control plane do?

To really understand Software Defined Networks (SDNs), we need to start from a place far different than the top of the current hype cycle. Instead, where we need to start is thinking about what a control plane actually does in a packet switched network. There seem to be just a few specific things involved in…

DC Fabric Segment Routing Use Case (1)

11 July 2016 |

A couple of weeks ago, I attended a special segment routing Networking Field Day. This set me to thinking about how I would actually use segment routing in a live data center. As always, I’m not so concerned about the configuration aspects, but rather with what bits and pieces I would (or could) put together…

CAP Theorem and Routing

25 March 2016 |

In 2000, Eric Brewer was observing and discussing the various characteristics of database systems. Through this work, he observed that a database generally has three characteristics— Consistency, which means the database will produce the same result for any two readers who happen to read a value at the same moment in time. Availability, which means…