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CHRISTIAN ESTEVE ROTHENBERG ET AL.
© 2010 Taylor & Francis Group, LLC
user interface (GUI), helper applications, or other LegacyFlow con-
troller instances. e three main subcomponents are as follows:
1. Web manager API: It interacts with the WEB GUI basedon
hypertext transfer protocol (HTTP)+JavaScript object nota-
tion (JSON).
2. Application manager API: It provides interfaces to helper
applications, such as route calculation, topology management,
monitoring, etc.
3. Inter-LegacyFlow communication API: It manages the
communication between LCCs located in other OpenFlow
domains and offers resource allocation, topology exchange,
and resource updates.
e LegacyFlow application assists the LCC on decisions, such as
policies, routes, or topol ...