On 06/05/13 21:03, Mark Mitchell wrote: > Hi everyone, > this problem is a corker as the only thing that gives it away is the > increased latency. > It appears that routes were injected and withdrawn from Geante's BGP > table effectively cutting CERN off from Geante's peering points for a > period of time. > Absolutely none of our monitoring is geared up for this type of > fundamental change to the underlying network topology and to be honest > it probably shouldn't be as this is an NREN issue. At RIPE66, there's just been a talk on: http://bgplay.routeviews.org/ Which looks like it is a visualisation tool that would catch this sort of thing if you were looking. Chris