Figure 16.2 also identifies the portion of the Service Provider network where
each of the solutions is usually deployed.
4 After all, defining these capabilities in the ETH layer fundamentally enables Carrier Ethernet to extend,
quite literally, everywhere and become a globally viable solution.
Figure 16.2 Typical deployment/functionality of Carrier Ethernet solutions in Service Provider networks
Access
MAN WAN
OSI Layers
Layer 1
Layer 2
Layer 3
Copper
WiMAX
PON
HFC
SONET/MSPP
FIBER/WDM
RPR
BRIDGING
MPLS
FSO
TDM
Core
Evolution of Carrier Ethernet Solutions 505
NOTE Some solutions, like Bridging, are able to go into the Access and deeper in the
network (especially for E-LINE services, with emerging technologies such as Provider
Bridge Bridging/ Transport) but are usually not likely to be deployed in the WAN (at
least exclusively).
Not Necessarily Mutually Exclusive Some of the commercial solutions in Part II are
not mutually exclusive from the standpoint of functionality. For example, a Bridging/
Switching solution (Chapter 13) may employ WDM (Chapter 8) or SONET (Chapter 11)
to extend the reach of the particular solution.
Pages:
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128