Traffic variations caused by inter-domain re-routing

Demand traffic matrix shifts have a dramatic impact on the required capacity of a network. This paper evaluates the influence of inter-domain failures onto the intra-domain demand traffic matrix. It is observed that some demand matrix values of an autonomous system increase up to 54% (with a 99.5% quantile) for some inter-domain link failures. However, in the evaluated scenarios, an average of 7% additional capacity on intra-domain links were sufficient to route and survive 99.5% of all traffic-shifts that were caused by single inter-domain link failures.