Page 225 - Optical Switching And Networking Handbook

09_200023_CH08/Batesx 1/17/01 8:20 AM Page 210

210 Chapter 8

Figure 8-19
The services using
the bandwidth
Escon Fiber channel Escon Fiber channel

Long-Haul
network

Fiber channel
Fiber channel
Enterprise

Storage area
networks Storage area
networks

Switch Switch
Figure 8-20
Local switching in
an optical
architecture (NEC)
Optical
transport layer

A
D
OC-48 M
W W A
D D D
OC-192
M M M
OC-48 Cross Cross
Connect Connect
Source: NEC

switched across town at the optical layer. Finally, the information
will be extracted in the reverse order back down to the cross-connect
and to any multiplexers on a local ring or multiplexer as necessary.
This configuration is shown in Figure 8-20.