
12
Metro networks: Services
and technologies
Loukas Paraschis
*
, Ori Gerstel
*
, and Michael
Y. Frankel
†
*
Cisco Systems, San Jose, CA, USA
†
CTO Office, Ciena, Linthicum, MD, USA
Abstract
This chapter summarizes the innovation in network architectures and optical
transport that has enabled metropolitan networks to meet the diverse service
needs of enterprise and residential applications, and cost-effectively scale to
hundreds of Gb/s of capacity, and hundreds of kilometers of reach. A converged
metro network, where IP/Ethernet services and traditional time-division multi-
plexed (TDM) traffic operate over a common intelligent wavelength-division
multiplexed