Combining security with network routers.
Cloud revenue expected to grow to $522 billion by 2026.
Take a Network Break! We cover Cisco cloud ASICs, examine the results of data center & server efficiency on electricity consumption, critique the IEEE for taking so long to officially ratify 25GigE, and more. The post Network Break 95: Cisco Trumpets Custom ASICs; DC Efficiency Yields Results appeared first on Packet Pushers.
Identify network outages before they happen.
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 to make something useful out of these particular 0’s and 1’s. The fabric below will be used as our example; we’ll work through this in some detail (which is why there is a “first part” marker in the title).
This is a Benes fabric, a larger variation of which which you might find in any number of large scale data center. In this network, there are many paths between A and E; three of them are marked out with red lines to give you the idea. Normally, the specific path taken by any given flow would be selected on a somewhat random basis, using a hash across various packet headers. What if I wanted to pin a particular flow, or set of flows, to the path outlined in green?
Let’s ask a different question first—why would I want to do such a thing? There are Continue reading