On 09/02/2010 07:37, John MacAuley wrote:
1. Aggregation and summarization.
I've done some simulations, analysis and have written a chapter about this in my thesis. My results show that aggregating a domain to a single node performs very badly compared to an aggregation model where you advertise a full mesh between edge nodes. I would also argue that the advantages of simplifying the internal domain do not balance the disadvantages you have in false positives in inter-domain pathfinding. However, these simulations have only used a single layer. We're currently looking at pathfinding in multi-layer networks, and we're thinking about how to create aggregations for multiple layers. This is a hard problem. Given the fact that current domains are not that complicated, and we have a very open culture in regards to information exchange, I would suggest that we leave the problem of aggregation open for now and just use full topologies. Jeroen.