 incomplete or not accessible if handled in hardware. How to track statistics on individual flows? In using devices such as TCAMs, which might equal multiple flows, it is not probable to use those devices to count individual flows separately. Furthermore, meeting statistics across the various tables can be difficult because the tables may count something two times or not at all (How SDN Works, n.d.). Software Based Switch Models of SDN There square measure several OpenFlow software system switches procurable that may be used as an example, to run Associate in Nursing OpenFlow take a look at- be or to expand and test OpenFlow-based network applications. a listing of current software system switches with a short description, as well as implementation language and therefore the OpenFlow customary, square measure as follows OpenVSwitch: It is a multi layer and production quality virtual switch licensed under the Apache 2.0 license. It is designed to allow network automation through programmatic extension, while still supporting standard management interfaces and protocols Indigo: It is runs on physical switches and uses the hardware features of Ethernet Switch ASICs to run OpenFlow at line rates. It is based on the OpenFlow Reference Implementation from Stanford University LINC: It is an open source project led by Flow Forwarding effort and is an apache 2 license executions based on OpenFlow 1.2/1.3.1. LINC is architected to use generally-available commodity x86 hardware and runs on a multiplicity of platforms such as Linux, Solaris, windows, MacOS, and FreeBSD where Erlang runtime is presented. PANTOU: This turns a profitable wireless router/ access point to an openflow- enabled switch. Pantou is based on the BackFire OpenWrt free. The openflow modules are based on the stand ford direction implementation. Downloaded: 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 SDN Controller OF13SOFTSWITCH: This is an OpenFlow 1.3 compatible user-space software switch execution based on the Ericsson Tr