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OPENFLOW/SDN AND OPTICAL NETWORKS
© 2010 Taylor & Francis Group, LLC
of traffic into the carrier’s optical network [12]. e use of SDN/
OpenFlow for control is relatively easy here because OpenFlow
already contains the control semantics for directing the mapping of
packet traffic into virtual ports (defined in the OpenFlow 1.2 specifi-
cation [13]), and these virtual ports can be mapped by a management
system or an optical control plane into point-to-point optical paths
connecting the POTS systems across the wide area network (WAN).
e use of OpenFlow allows the service provider to specify more flex-
ible mapping based on the different components of the packet header
and flexible encapsulation and decapsulation actions depending on
the desired service, ...