Carrier Ethernet

Carrier Ethernet

From the first standardization in 1980, Ethernet has established itself as a key component between communication protocols. Its first success was achieved in the LAN networks, which gradually overcame established technologies such as Token Ring, FDDI, ARCNET, and many others. Pushed by the needs and requirements of customers, operators began to offer customers Ethernet as a service to minimize the necessary conversion from other technologies associated with high prices. Gradually Ethernet spread across the entire spectrum of networks from EFM (Ethernet in the First Mile) to metropolitan and core networks.

A fundamental change occurred for operators standardization of key services by the organization MEF (Metro Ethernet Forum), founded in 2001. Without the definition of commonly accepted services Ethernet cannot be applied in the world of operators. Carrier Ethernet is defined by its services of E-Line, E-Lan and E-Tree. Most operators started to use Carrier Ethernet within metro networks and as a add-on or replacement of TDM.


Expansion of Carrier Ethernet OAM standard (Operation and Maintenance) allows connection verification, measurement throughput, latency and other parameters to facilitate the deployment and monitoring services. Ethernet is becoming the technology of choice for transmission of customer service with a guaranteed SLA. Further expansion of Carrier Ethernet 2.0 defines the principle of transmission of Ethernet services between operators and opens up new business opportunities and models such as Ethernet Exchange..

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Distributed Network Functions D-NFV

In connection with SDN, there is talk about applications that open network architecture brings. There is a new application interface that provides access to new applications without regional restrictions, which virtualizes networking functions. It is here that the concept of NFV (Network Virtualization Functions) becomes known. This function is essentially independent of SDN, but NFV alone can maximize the openness of the SDN interface. We need to get applications -network features- to the customer proactively, according to immediate needs. Most of these virtualised functions stay within data centres and are swiftly and efficiently allocated to customers. However, there are features that we would like to virtualize, but they would need to be closer to the customers. We need the customers to have open platform, which would allow us to dynamically add network functionality as needed; we need distributed NFV.

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Ethernet over any media

Data communications are renowned for the variety of communication protocols and interfaces. In the decades of its development there were created different interfaces for transmitting data and all of these interfaces are dependent on communication protocols and devices connected to them. For each new interface the complexity of the network increased and its maintenance was and is extremely demanding. If we need to transmit the service, whether to the customer or internally within the organization, each additional physical interface makes transmitting service more difficult and expensive. The ideal solution would be to have one physical interface, which can transmit various services.

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Guaranteed ethernet services

Internet connection is now as matter of course, whether it is a home, small business or large corporation. Internet throughput in comparison with its beginnings is enormous. From a user perspective the goal is reached when movies in high quality is pulling out faster than we can watch. High bandwidth network enables us to move most of the data in different data centres and clouds. Increasingly we use applications that are not on our local servers, but running directly from the private or public cloud. We are becoming dependent on a data connection; we can’t work without it.

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Interconnection between operators - new business opportunities

Interconnection between operators of Ethernet technology is now quite common, but Ethernet is in most cases only used as a transport protocol for IP between two closest peers. The actual interconnection between operators, ISPs and data centres is thus the third layer of the OSI model, IP plays a key role. But there are many applications where IP ultimately does not satisfy the technical requirements of applications and gets solutions very expensive. This is also why we still use circuit-based TDM to meet the requirements of customers with high demands on the SLA. Carrier Ethernet connects these two worlds, flexibility and throughput of IP networks and the demands on the SLA known from TDM networks. Carrier Ethernet allows to create a data circuit through multiple operators with end-to-end measurement and micro-sec. precision. Unlike TDM networks Carrier Ethernet offers greater throughput with much lower costs even compared with networks based on IP.

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IP VPN virtualzation and Carrier Ethernet access

IP VPN are for many years the only available and economical solution for connecting corporate networks. IP protocol is the unifying element in a private networks, networks of individual operators or using the public Internet. The main reason for massive expansion of private networks using IP VPN is extending IP and mainly using the public Internet. IP VPN technology allows us to connect to our private network wherever there is an Internet connection.

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