Cisco ONS 15454 DWDM Reference Manual page 421

Chapter 9 Node Reference
9.3 Optical Sides
From a topological point of view, all DWDM units equipped in an MSTP node belongs to a side. A side
can be identified by a letter (A, B, C, D, E, F, G, or H), or by the ports (called as side line ports, see
9.3.2 Side line ports, page
connected to a maximum of 8 different spans. Each side identifies one of the span the MSTP node is
connected to.
Side A and Side B replace "west" and "east" when referring to the two sides of the ONS 15454 shelf.
Note
Side A refers to Slots 1 through 6 (formerly "west"), and Side B refers to Slots 12 through 17 (formerly
"east"). The line direction port parameter, East-to-West and West-to-East, has been removed.
Sides are viewed and managed from the Provisioning > WDM-ANS > Optical Sides tab in CTC, shown
in Figure
Figure 9-20
9.3.1 Optical Side Stages
All MSTP nodes can be modelled according to
78-18343-02
9-25) that are physically connected to the spans. An MSTP node can be
9-20.
Optical Side Tab
Figure 9-21.
Cisco ONS 15454 DWDM Reference Manual, R8.5
9.3 Optical Sides
9-21