Abstract:
Scalability of Software Defined Networking (SDN) approach is one of the key issues that many network operators are willing to address and understand. Indeed, the promised...Show MoreMetadata
Abstract:
Scalability of Software Defined Networking (SDN) approach is one of the key issues that many network operators are willing to address and understand. Indeed, the promised programmability and flexibility of a SDN network is paid with a non-negligible control traffic exchanged between the network nodes and the SDN controllers. We consider a network controlled by a real OpenFlow-enabled controller, i.e. OpenDaylight. We evaluate analytically the number of OpenFlow messages for installing a new traffic flow, assuming the default reactive forwarding application available in OpenDaylight. We apply these results to the specific case of a large ISP network, comprising a backbone interconnecting many POPs. By evaluating exactly the amount of generated control traffic, we are able to assess the scalability of the reactive forwarding application in a practical relevant scenario for ISPs.
Date of Conference: 08-12 June 2015
Date Added to IEEE Xplore: 10 September 2015
ISBN Information: