While the IXs may routinely process 2.0+Tbps through their routing ASICs, they are unlikely to be prepared for receiving 0.3+Tbps to their router control planes

While the IXs may routinely process 2.0+Tbps through their routing ASICs, they are unlikely to be prepared for receiving 0.3+Tbps to their router control planes. By saturating the control planes, you could destabilize routing protocols and cause link flaps, even if the underlying ASIC switching fabric is unharmed.