Ethernet Access to Ethernet or IP Services
Figure 11.8 illustrates how the MSPP may provide Ethernet access to MEF-compliant
E-Line or Emulated LAN (E-LAN) services or to IP-based services, such as Internet or
IP Virtual Private Network (IP-VPN) services. In this scenario, the service provider sells
the Ethernet or IP-based service to its customer and the EoS portion provides access
from the customer to the E-Line, E-LAN, or IP-based service; this is similar to the way
DS-1 or DS-3 circuits have historically provided dedicated access to Internet services.
In this scenario, the role of the EoS network differs from its role in the previous
(E-Line delivery) scenario, where it delivers the service itself, not just access to the
service. However, many of the attributes of the EoS network remain, including pointto-
point EoS transport, the ability to deliver traditional DS-n private line service, high
survivability, and operational commonality with traditional private line services. MEF
compliance is not strictly required in the access MSPP (the equipment that provides the
E-Line or E-LAN service must provide that), although the MSPP may not transport the
EoS in a way that interferes with the ability of other equipment to deliver the Ethernet
service.
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