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Peering Carrier Ethernet Networks

Abstract

This chapter describes how growth in Ethernet technology is leading to the expansion of Carrier Ethernet (CE) services beyond one operator's Carrier Ethernet Network (CEN). This expansion is also coupled with the fact that today subscribers, particularly business subscribers, have many locations that are not all in one operator's footprint. These are the reasons that are making peering of CENs necessary. To address this necessity, MEF defined an E-Access service type that uses External Network–Network Interface (ENNI), and these are the topics of this chapter. In order to understand this E-Access service type, it is essential to revisit bridging techniques and tags, particularly S-tags because of the ...