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Nick Feamster
Nick Feamster
4/25/2016 | 1:55:09 PM
Re: Virtualization: Network Design & Infrastructure

Fantastic question.  Network security---and debugging in general---can be more difficult.  It's easiest to understand with debugging: To go back to my example in lecture on the NYC-DC "virtual link".  Suppose I see poor performance or high packet loss on that "link".  In fact, I will need additional visibility to understand which underlying physical link is actually causing poor performance.

Security problems cut both ways.  This kind of visibility challenge makes security harder in some cases.  But, in others, the additional isolation that NFV/virtualization provides can actually help in some cases.



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