1.2.13 Improvements Weight

IRP assigns each improvement a weight. The weight takes into consideration many network and environment aspects of the change such as policy or VIP destinations, loss and latency differences, cost or commit control type of the improvement. Based on all of the above the improvement gathers more or less weight as appropriate.

Later on, instead of replacing oldest improvements that might still bring significant benefits with new improvements just because they are fresh, IRP relies on the weights to decide whether the benefit of the new improvement is sufficient to replace an existing one. More so, besides preserving the most relevant improvements this feature reduces route flapping by blocking announcement of new improvements and withdrawal of existing ones if the changes are not offering a good enough return.