Ethernet Private Line

Overview

Ethernet private lines provide the user the ability to transport frames completely transparently between two Alcatel-Lucent 1665 DMX NEs. No VLAN knowledge or packet-layer provisioning is required by the user in this application. Simple, SONET STS-1 cross-connect provisioning is all that is required. These Private Line capabilities allow the Alcatel-Lucent 1665 DMX to provide dedicated bandwidth for individual customers and fast SONET-layer restoration in the event of a facility-based failure.

Ethernet Private Line (point-to-point Ethernet) for enterprise LAN transport

Alcatel-Lucent 1665 DMX utilizes standard STS-1 (STS-3(c) can also be used) with virtual concatenation (ITU G.707) to transport 10/100 Mbps or 1000 Mbps Ethernet services over a SONET OC-12/48/192 UPSR/BLSR ring. In this configuration, Ethernet traffic from an end customer may be fed to a core router in the central office (CO), while voice traffic is fed from the same ring to a voice switch in the CO. In Private Line LAN transport configurations, standard SONET UPSRs/BLSRs provide restoration of service within 50 milliseconds.

Figure 3-6: Ethernet Private Line transport application

Application advantage

Ethernet private lines simplify networks by eliminating intermediate WAN protocols, such as frame relay or ATM while providing service providers an ideal migration path from traditional Private Line, circuit-based services.

Ethernet private lines also provide dedicated bandwidth and absolute QoS for business critical data transport applications. Private lines are protected by SONET layer protection switching with a guaranteed restoration time of less than 50 milliseconds.