Cable operators are already using Ethernet
over WDM heavily.
Carrier Ethernet Switches and Routers
Carrier Ethernet switches and routers (CESR) represented the largest equipment type
worldwide in 2005??”43 percent of the total metro Ethernet equipment market. Carriers
continue to invest in CESR equipment to the tune of a five-year CAGR of 21 percent.
Carrier Ethernet switches and routers are a growing mainstay for providers to deliver
Ethernet services, displacing enterprise-class Ethernet switches and enterprise routers
with Ethernet interfaces, which waned quickly, as Carrier Ethernet products fully
entered the market.
DSL
Ethernet services are offered over DSL, especially with the types of DSL covered here.
DSL over copper (VDSL at 26M to 100M, G.SHDSL at 2.3M, ADSL2/ADSL2+, and
bonding technologies) is deployed in the local loop by over half of the major Service
Providers, and it will continue to grow strongly, as more manufacturers develop these
products and customers in copper-fed buildings need higher bandwidth connections.
VDSL2 products will stimulate this segment, with lynchpin customer plans by AT&T
plus many Asian providers.
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