9-24
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 9 Node Reference
9.3.1 Optical Side Stages
9.3.1.2 A/D Stage
The A/D stage includes DWDM cards that can add and drop traffic. The A/D stage is divided into three
node types:
• Mesh nodes—ONS 15454 nodes configured in multishelf mode can connect to eight different sides.
For more detail on mesh node, see 9.4 Configuring Mesh DWDM Networks, page 9-30.
• Legacy—Half of a ROADM node or an OADM node with cascaded AD-xB-xx-x or AD-xC-xx.x
cards
• Non-A/D—A line node or a side that does not have A/D capability is included in the A/D stage
Stages are built by active cards and patchcords. However, the interconnecting sides are completed by the
mesh patch panels (four-degree patch panel or eight-degree patch panel) in mesh nodes, or by patchcords
connected to EXP-RX/EXP-TX ports in legacy nodes.
C OSC-CSM <->
OPT-PRE/OPT-AMP(OPT-PRE mode)
• OSC-CSM LINE ports connected to the span
• OSC-CSM COM-TX ports connected to OPT-AMP COM-RX
ports
• OPT-AMP(PRE)/OPT-PRE LINE-TX/COM-TX port
connected to the next stage (for example,
40-WSS-C/40-WSS-CE COM-RX ports in ROADM)
• OSC-CSM COM-RX port connected to the next stage (for
example, a 40-WSS-C/40-WSS-CE COM-TX port in a
ROADM node)
D OPT-BST
• OPT-BST OSC ports connected to OSCM OSC ports or
OSC-CSM LINE ports
• OPT-BST LINE ports connected to the span
• OPT-BST COM ports connected to the next stage (for example,
a 40-WSS-C/40-WSS-CE COM port in a ROADM node)
E OPT-AMP (OPT-BST mode)
• OPT-AMP OSC ports connected to OSCM OSC ports or
OSC-CSM LINE ports
• OPT-AMP LINE ports connected to the span
• OPT-AMP COM ports connected to the next stage (for
example, a 40-WSS-C/40-WSS-CE COM port in a ROADM
node)
F OSC-CSM
• OSC-CSM LINE ports connected to the span
• OSC-CSM COM ports connected to the next stage (for
example, a 40-WSS-C/40-WSS-CE COM port in a ROADM
node)
Table 9-1 Supported Fiber Stage Configurations (continued)
Layout Cards Configurations
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