Metro Ethernet concept: models, attributes, technologies

DOI №______

Abstract

The classification of Ethernet networks is given. A significant difference of large city scale Ethernet networks (Metro Ethernet) from Ethernet networks of carrier class (Carrier Ethernet) is shown. The requirements for the description of services and interfaces of Carrier Metro Ethernet networks are defined.
Description of Carrier Metro Ethernet networks is possible based on the model of Ethernet services. Services are described by a set of attributes, each of which is characterized by a set of parameters that can be determined numerically. This allows you to formulate a set of requirements for the data transmission channel in a form that does not depend on either the particular service or the transport environment in which the channel for its transmission is organized. By combining existing technologies it is possible to build reliable, scalable, and secure Ethernet Сarrier-class networks with quality of service parameters like in circuit-switched networks.
Technologies and methods for building multi-service networks based on Carrier Metro Ethernet are shown. Methods and mechanisms to support different classes of services, VLAN address space extensions, Q-in-Q and MAC-in-MAC encapsulation for traffic isolation and enhance network security are presented.

Keywords: Metro Ethernet, Carrier Ethernet, multiservice network, virtual network, service attribute, class of services, Q-in-Q encapsulation, MAC-in-MAC.

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