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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical AS num and route flaps
Is anyone aware of any relationship between AS numbers and route dampening? Are there any situations, or knobs to be tweaked, that can result in an AS being dampened due to flaps, rather than only ip addresses and prefixes and meds coming into play? I'm working on a tech draft for IPv4 anycast in DNS, and in the hallways in Chicago there was some peripheral discussion about the problems that would occur with route dampening including a statement that if the various anycast addresses were in the same AS and only one of the nets flapped, they would all be affected if "someone networks" dampened the AS. For some reason no-one in the assembled pack questioned the veracity of this statement at the time. Granted, it was late in the night even for NANOG, but in the cold light of day I can't see any relationship. So I would appreciate any input in case someone has found a reason and method to involve AS numbers in dampening (and specifically related to dampening - I am not examining other factors like fat fingering, or filtering issues based on AS, at this stage). Many thanks... -- Rodney Joffe CenterGate Research Group, LLC. http://www.centergate.com "Technology so advanced, even we don't understand it!"(SM)
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