If events are not properly triggered back upstream (ie:
adjencies stay up, bgp remains fairly stable) and you end up
dumping a lot of traffic on the floor, it's sometimes a bit
more dificult to diagnose than loss of light on a physical path.On the sunny side, I see this improving over time.
Software bugs will be squashed. Poorly designed networks
will be reconfigured to better handle these situations.
But this happens everywhere, everyday, regardless of the underlying
technology.