Triple-Play Service Deployment

20
Bandwidth
Chapter 2: Triple-Play Service Delivery over Ethernet Networks
Ultimately, Ethernet as an aggregation network allows providers
and carriers to meet the growing demands of end-customers by
offering broader service coverage and choices. Further, it ensures
capital and operating expense reductions in the networks—all of
this by meeting the bandwidth gap that existed in the Metro
network with traditional leased lines. As Figure 2.2 outlines,
Ethernet as a transport technology allows providers to maintain
the competitive edge, while offering services without sacrificing
the bandwidth requirements. Furthermore, Ethernet technology
being standardized and IP-friendly allows for compatibility
between the Enterprise, Metro, and Core network topologies,
without the need for expensive transport conversion deployments.
10BaseT
100BaseT
1 GigE
10 GigE
Enterprise
64 Kbps
2 Mbps
34 Mbps
STM-1
TDM/FR/ATM
Access
Bandwidth Gap
STM-4
STM-16
STM-64
TDM Metro
Edge
STM-64
2.5 Gbps
10 Gbps
IP and Optical
Core
Figure 2.2 Ethernet in the Metro network addresses the bandwidth gap that existed with
traditional leased line services.