Lucent Technologies 1850 TSS-3 manual Multiple Applications, Demarcation

Multiple Applications

Potential applications for the 1850 TSS-3 include:

•Ethernet demarcation

•Ethernet service aggregation

•Ethernet over PDH (EoPDH)

•Ethernet extension

In Figure 1, the 1850 TSS-3 is in the Ethernet- demarcation role, with the demarcation point shown as a dotted line, representing the point where a single stream of traffic crosses from

Figure 1. Ethernet Demarcation

the customer-owned equipment to the service- provider-owned customer premises equipment (CPE). At the demarcation point, the 1850 TSS-3 accepts a single traffic stream on the customer side and transports this traffic to one or more network elements in a carrier Ethernet network. This application offers fault diagnostics and monitoring, traffic rate limiting and virtual LAN (VLAN) stacking (capability of offering multiple, discrete VLANs over a single connection).

1850TSS-3

Demarcation

Carrier Ethernet

Network

(Ethernet or MSPP

or WDM-based)

WDM – Wavelength Division Multiplexing MSPP – Multiservice Provisioning Platform

1850 TSS-3

Demarcation

In Figure 2, the 1850 TSS-3 is in an Ethernet service-aggregation configuration, in this case acting as a carrier-class Ethernet switch, accepting multiple inputs from the customer side and aggregat- ing them for onward transmission on the network side. Network-side redundancy can be provided by Rapid Spanning Tree Protocol or Ethernet dual homing, two methods for providing automatic backup paths.

Figure 2. Ethernet Service Aggregation

1850 TSS-3	Metro Ethernet	1850 TSS-3
	Network

(Ethernet or MSPP or CWDM-based)

DemarcationDemarcation

CWDM – Coarse Wavelength Division Multiplexing

4Alcatel-Lucent 1850 TSS-3 Transport Service Switch