9-22
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 9 Node Reference
9.3.1 Optical Side Stages
Figure 9-21 Interconnecting Sides Conceptual View
According to Figure 9-21, each MSTP node side includes DWDM units that can be conceptually divided
into three stages.
• Fiber stage—The set of DWDM cards with ports that directly or indirectly face the span.
• A/D stage—The add/drop stage.
• TXP/MXP stage—The virtual grouping of all TXP or MXP cards with signals multiplexed or
demultiplexed to and from the physical fiber stage.
9.3.1.1 Fiber Stage
The fiber stage includes DWDM cards that are used to amplify transmitted or received signal and cards
that are used to add optical supervision channel. The fiber stage cards are:
• Booster amplifier cards that directly connect to the span, such as:
–
OPT-BST
–
OPT-BST-E
–
OPT-BST-L
–
OPT-AMP-C, when provisioned in OPT-LINE (booster amplifier) mode
–
OPT-AMP-L, when provisioned in OPT-LINE (booster amplifier) mode
–
OPT-AMP-17-C, when provisioned in OPT-LINE (booster amplifier) mode
• Preamplifier cards, such as:
–
OPT-PRE
–
OPT-AMP-C, when provisioned in OPT-PRE (preamplifier) mode
159460
Fiber
Stage
Side A
A/D
Stage
Side E
Interconnecting
sides I/F
TXP/MXP Stage
Side F
Side B
Side G Side C
Side H
Side D