North American Network Operators Group|
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Randy Bush wrote: > > Vadim, > > > > we recognize, and appreciate your concerns. > > > > Two major points with regard to the PathControl product, > > and it's impact on the BGP environments: > > > > 1) PathControl is currently targeted toward providing > > optimized egress routes to multihomed enterprises. > > Our technology is applicable to core routing, but > > we certainly acknowledge the constraints in that > > environment are radically different ... > > > > 2) We've integrated extensive anti-flapping capabilities > > into the product, and in addition have user-configurable > > settings for maximum rate of route change. > > > > Given a high rate of changing performance measurements, the box > > is capable of generating routing decisions at a high rate. > > Our analysis (and default settings) show that significant > > performance gains can be realized with a rate of change in > > typical deployments less than ~100 prefix changes per hour. > > (And maximum rates can be constrained lower than this, > > if desired.) > > you're doing releasing just the perfect kind of sheep to graze the routing > commons of which i have been speaking, for example see > <http://psg.com/~randy/010809.ptomaine.pdf>, > > folk, it's time to get those prefix length filters in before the real > /22-/24 pollution gets really crazy. Randy, please allow me to make clear ... The PathControl product does *not* add routes to anyone's table; it merely provides multihomed "leaf AS's" the ability to make informed decisions about how to use the routes that their service providers give to them.