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The Seattle SIX exchange tried out this technique for their last software upgrade. Seemed like an interesting solution. https://ripe67.ripe.net/presentations/374-WH-IXPMaintReduce.pdf On Mon, Jul 20, 2015 at 01:11:34PM -0500, Andrew Hoyos wrote: > Shutting down the route server sessions would at least let BGP hold timers expire gracefully while traffic can still be forwarded for the duration of the hold timer. > > Probably more important for those folks that are layer 2 extended into the IX and don't necessarily have any notion of physical link to the switch. > > -- > Andrew Hoyos > [log in to unmask] -- Jeff Bartig University of Wisconsin [log in to unmask] (608) 262-8336