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What is Transport Networks

Chapter 15
Handbook of Research on Redesigning the Future of Internet Architectures
Transport networks are defined as network infrastructure that provides connectivity and bandwidth for customer services. They are characterized by their ability to support server layer provisioning and traffic engineering for client layer services, such that resource guarantees may be provided to their customers. Transport networks in this chapter refer to a set of different types of connection-oriented networks, which include Connection-Oriented Circuit Switched (CO-CS) networks and Connection-Oriented Packet Switched (CO-PS) networks. This implies that at least the following transport networks are in scope of the discussion of this chapter: Layer 1 (L1) optical networks (e.g., Optical Transport Networks (OTN) and Wavelength Switched Optical Networks (WSON)), MPLS-TP, MPLS-TE, as well as other emerging network technologies with connection-oriented behavior.
Published in Chapter:
Abstraction and Control of Transport Networks
Young Lee (Huawei Technologies, USA) and Daniele Ceccarelli (Ericsson, Italy)
Copyright: © 2015 |Pages: 18
DOI: 10.4018/978-1-4666-8371-6.ch015
Abstract
Virtual network operation refers to the creation of a virtualized environment allowing operators to view the abstraction of the underlying multi-admin, multi-vendor, multi-technology networks and to operate, control and manage these multiple networks as a single virtualized network. Another dimension of virtual network operation is associated with the use of the common core transport network resources by multi-tenant service networks as a way of providing a virtualized infrastructure to flexibly offer new services and applications. The work effort investigating this problem space is known as Abstraction and Control of Transport Networks (ACTN). This chapter provides an ACTN problem description, identifies the scope of this effort, and outlines the core requirements to facilitate virtual network operation.
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