Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Survey on Software Defined Networking: Architecture for Next
  Generation Network   The evolution of software defined networking (SDN) has played a significant
role in the development of next-generation networks (NGN). SDN as a
programmable network having service provisioning on the fly has induced a keen
interest both in academic world and industry. In this article, a comprehensive
survey is presented on SDN advancement over conventional network. The paper
covers historical evolution in relation to SDN, functional architecture of the
SDN and its related technologies, and OpenFlow standards/protocols, including
the basic concept of interfacing of OpenFlow with network elements (NEs) such
as optical switches. In addition a selective architecture survey has been
conducted. Our proposed architecture on software defined heterogeneous network,
points towards new technology enabling the opening of new vistas in the domain
of network technology, which will facilitate in handling of huge internet
traffic and helps infrastructure and service providers to customize their
resources dynamically. Besides, current research projects and various
activities as being carried out to standardize SDN as NGN by different standard
development organizations (SODs) have been duly elaborated to judge how this
technology moves towards standardization.

28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph