Jessy V. Rouyer

Issues and approaches on extending Ethernet beyond LANs

Currently, LAN technology is predominantly Ethernet-based and offers packet-optimized switched technology. With more than 90 percent of Internet traffic originating from Ethernet-based LANs, efforts are underway to extend Ethernet beyond LANs into MANs and further into WANs. However, native Ethernet protocols need extensions or support from other technologies in order to succeed as MAN technology in terms of scalability, QoS, resiliency, OAM, and so on. The two emerging trends to carry Ethernet traffic across the MAN can be classified into native Ethernet (IEEE) protocol extensions, and encapsulation by another transportation technology such as MPLS networks. The goal is to offer new and challenging services such as virtual private LAN service, also known as transparent LAN service (TLS). This article presents a comprehensive overview of the required extensions/support of the Ethernet with an emphasis on the emerging provider bridge technology.

Differentiated and fair congestion control using efficient buffer management (DifCom) for the metro Ethernet

This paper presents an efficient scheme in regulating the flow and avoiding congestion in a differentiated and fair manner for metro Ethernet. Preliminary studies have shown that the proposed scheme has the ability to promote max-min fair allocation of bandwidth across the network. It also has the ability to avoid conflicts with TCP control functions.