Encapsulation-less network virtualization solution based on SDN.
Overlay network virtualization quickly gains traction in to-
day’s multi-tenant data centers due to its ability to provide
independent virtual networks, at scale, along with complete
isolation from the underlying physical network. Despite the
beneﬁts, performance degradation due to the imposed per-
packet encapsulation overhead is a serious impediment.
Mitigation approaches are mostly hardware based and
thus depend on costly networking gear upgrades and suﬀer
from lesser ﬂexibility and longer times to market, compared
to software solutions. Software optimizations proposed so
far are limited in scope, applicability, and interoperability.
In this paper we present NoEncap, a software-only opti-
mization, capable of eliminating almost completely the over-
heads, while fully preserving the beneﬁts of an overlay-based