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Discover expert traffic engineering insights, proven best practices, and step-by-step tutorials designed to help you maximize your network’s efficiency.
By understanding key principles, you can optimize data flow, reduce bottlenecks, enabling you to create a robust and scalable network architecture that meets the demands of today’s digital landscape.
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The Growing Need for Traffic Engineering in Datacenter Fabrics
Introduction In the past years, the Clos or fat-tree architecture has been the dominant model for building large-scale datacenter networks. Its success stems from a simple but powerful idea: provide bandwidth and path diversity in abundance. Multiple equal-cost paths exist between nearly every source and destination pair, allowing relatively simple forwarding techniques such as ECMP…
Fast ReRoute: The Rise of Optimization and Constraint-Aware FRR
Introduction Fast Reroute (FRR) is one of the defining capabilities of RSVP-TE, enabling networks to recover from failures in tens of milliseconds rather than waiting for full control-plane convergence. By precomputing backup paths and shifting protection into the data plane, FRR allows traffic to be redirected almost instantaneously at the point of failure (Point of…
A Systems Approach to Understanding the Bandwidth Management Control Loop
Bandwidth management(BW) in traffic-engineered (TE) networks is often discussed in terms of specific protocols or architectural models. Yet before debating different architectural models or protocol specific details, it is useful to step back and understand the functional problem being solved. At its core, bandwidth management is a control loop. It observes network conditions, interprets those…
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