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Cisco ONS 15454 DWDM Reference Manual, R8.5
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Chapter 9      Node Reference
9.1.4    ROADM Node
9.1.4 ROADM Node
A ROADM node adds and drops wavelengths without changing the physical fiber connections. A 
ROADM node is equipped with two TCC2/TCC2P cards and one of the following combinations:
 • Two 32WSS cards and, optionally, two 32DMX or 32DMX-O cards
 • Two 32WSS-L cards and, optionally, two 32DMX-L cards
 • Two 40-WSS-C or 40-WSS-CE cards and, optionally, two 40-DMX-C or 40-DMX-CE cards
Transponders (TXPs) and muxponders (MXPs) can be installed in Slots 6 and 12 and, if amplification is 
not used, in any open slot. 
Note Although not required, 32DMX-O can be used in an ROADM node. Cisco TransportPlanner 
automatically chooses the demultiplexer card that is best for the ROADM node based on the network 
requirements.
Figure 9-11 shows an example of an amplified ROADM node configuration with 32DMX cards installed.
Figure 9-11 ROADM Node with 32DMX Cards Installed
Figure 9-12 shows an example of an amplified ROADM node configuration with 40-WSS-C cards 
installed.
OPT-PRE
OPT-BST
32WSS
DCU W
Air ramp
DCU E
TCC2/TCC2P
32DMX
32DMX
Available
Available
OSCM
OSCM
TCC2/TCC2P
32WSS
OPT-BST
OPT-PRE
AIC-I
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