> > Reordering per se doesn't affect VoIP at all since RTP has an inherent > resync mechanism.
Most VoIP implementations don�t care about storing out-of-order packets because they think that 20ms or 30ms late packets should be thrown away in any case. > > Reordering is also unlikely, since each packet is sent 20ms or more apart; > I'm not aware of any network devices that reorder on that scale. > Most "core" routers, at least from vendors C and J have enough packet memory to keep packets for hundreds of milliseconds. Apply sufficent per packet load balancing (which would be stupid but doable) to this, and you�ll arrive at the end result. Our observations tell us that reordering does not happen too much but there are periods from a few minutes to an hour where reordering from specific AS�s skyrocket to return to normal, in many cases even without observable path change. (MPLS in action?) Pete
