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Abstract
The integration of Software Defined Networking (SDN) technologies in Passive Optical Networks (PONs) would provide great advantages to Internet Service Providers (ISPs) and Network Operators, since they can optimize the network operation and reduce its complexity. However, some tasks regarding online service and network configuration strategies are difficult to move to external SDN-controllers since they are time-critical operations. However, the control of some of these policies by SDN techniques could lead to better network and management configuration in a centralized and automatic way. As a consequence, we propose and experimentally test the integration of an OpenFlow approach over legacy Gigabit Passive Optical Networks (GPONs), which allows moving some global service configuration policies to an external SDN controller implementing an SDN management layer that adjust these strategies according to dynamic Quality of Service (QoS) requirements of services in residential users. The viability and efficiency of our approach are demonstrated using a GPON testbed and proposing a new business scenario for ISPs and Network Operators.
Highlights
Software Defined Networking (SDN) is an emerging and open communications technology that allows an abstraction and separation of the control and data planes
We propose and experimentally test an SDN solution over legacy Gigabit Passive Optical Networks (GPONs), which allows moving some global service configuration policies to an SDN controller by means of programming an external SDN management layer that dynamically adjusts these policies according to the stipulated dynamic Quality of Service (QoS)
Contrary to Contrary to most of the proposed online service reconfiguration policies or Dynamic Bandwidth Allocation (DBA) algomost of the proposed online service reconfiguration policies or DBA algorithms managed rithms managed by SDN which are implemented with simulations, we have experimenby SDN which are implemented with simulations, we have experimentally demonstrated tally demonstrated our proposal using a GPON testbed with legacy equipment
Summary
Software Defined Networking (SDN) is an emerging and open communications technology that allows an abstraction and separation of the control and data planes. With SDN a part of the datapath resides on the switches and routers of the network, but there is a central controller that makes high-level routing decisions over them using protocols such as OpenFlow [3], NETCONF [4], or RESTCONF [5]. Due to these advantages, the integration of SDN in Passive Optical Networks (PONs) is gaining high importance, and its implementation to provide different functionalities is being proposed extensively by many authors. PON technologies will become predominant in the coming years, going from 48.4% in September 2018 to 73% in 2025 [7]
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