Traffic engineering with joint link weight and segment optimization
Mahmoud Parham, Thomas Fenz, Nikolaus Süss, Klaus-Tycho Foerster, Stefan Schmid · 2021
Most ISPs use sophisticated traffic engineering strategies based on link weight optimizations to efficiently provision their backbone network and to serve intra-domain traffic. While traditionally, traffic is split among the shortest weighted paths using ECMP, recently, an additional dimension for optimization arose in the context of segment routing: traffic can be steered away from congested shortest paths by inserting intermediate destinations, so-called waypoints.