8 Carrier Ethernet data and control plane mappings
GMPLS
Single Mode Fiber (SMF)
SONET/
SDH
ATM, frame
relay
Ethernet
Ethernet
SONET/
SDH
SONET/
SDH
MPLS
Ethernet
SONET/
SDH
RPR
Ethernet
RPR
Ethernet
Ethernet
Legacy
EoF, EoWDM
EoS
EoMPLS EoRPR
SONET/
SDH
ATM, Frame
Relay
Ethernet
Ethernet
SONET/
SDH
LCAS
MPLS
Ethernet
SONET/
SDH
RPR
Ethernet
RPR
Ethernet EoF
EoS
EoMPLS
EoRPR Legacy
Ethernet
EoWDM
Ethernet
EoRPR
EoRPR
Data Plane Encapsulations
Control Plane Protocol Mappings
OTN digital
wrappers
Ethernet
EoWDM
GFP,
VCAT
Fiber and WDM 221
of this book. Clearly, the choice of a particular solution will depend upon various contingencies
such as cost, existing infrastructures, projected demands, and competition.
Moreover, these choices need not be mutually exclusive; in many cases, operators can
selectively internetwork solutions to achieve maximum coverage. This section details
some of the actual benefits and shortcomings of EoF and EoWDM vis a vis the competing
alternatives (see Table 8.6).
Benefits
Fiber-optic transmission offers many inherent benefits for carrier-grade Ethernet services.
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