
© 2009 Cisco Systems, Inc. All rights reserved.
32
Cisco PublicBRKBBA-2006
DWDM PON Architecture
FTTx
Access Network
N-PE
Ethernet/MPLS
Aggregation Network
• Two dedicated wavelengths, according to ITU-T 100GHz grid, per user
• Minimized component diversity (same optics for every end point)
• Flexibility for ONT/ONU (managed, unmanaged, switch, router)
User
Access Network
OLT
Street Cabinet
or Underground
Enclosure
U-PE
Central Office
Business
Customer
FTTH
Customer
DSL
Customer
Outdoor
DSLAM
AWG
RX
TX
RX
TX
ONT
ONT
UBR2
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
32x
RX
TX
IP/MPLS
Edge/core
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