In reply to Stephen Speirs.

Many thanks for the clarification Stephen! Really, no need to apologise about the delay, please! As you say, busy days for us and the industry :-). I personally concur with you about OpenFlow in SP sphere. Having worked in SP space in EMEA for over a decade, I totally concur with you about adoption time for new technologies. Scalability is definitely a factor.
Cisco's NFV vision definitely breathes energy. If allowed to be extensible and combined with OpenFlow, then that will bring in interesting times for certain block of SP based services, as you have rightly pointed out.

Thank you for another superb write-up!
Best Regards

santanu