Cisco ONS 15454 DWDM Reference Manual page 437

Chapter 9 Node Reference
9.4.3 Mesh Patch Panels and Shelf Layouts
Figure 9-28 Four-Degree Patch Panel Signal Flow
Test Access Test Access
TX Ports RX Port
PP-MESH-4
EXP TX EXP TX EXP TX EXP TX
COM RX COM RX COM RX COM RX
40-WXC-C 40-WXC-C 40-WXC-C 40-WXC-C
The mesh patch panels interconnect 40-WXC-C cards to create mesh networks, including four-degree
and eight-degree mesh topologies. In addition, shelves with 40-WXC-C cards can be configured with
mesh patch panels to create multiring, MMU-based mesh nodes. 40-WXC-C cards can be installed in
ROADM nodes with MMU cards to upgrade a two-degree MMU-based ROADM node into four-degree
or eight-degree mesh nodes. Figure 9-29 shows the ROADM node with MMU cards configuration after
it has been upgraded into a four-degree mesh topology.
Cisco ONS 15454 DWDM Reference Manual, R8.5
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