Subtending Rings - Cisco ONS 15600 Reference Manual

Chapter 8 SDH Topologies and Upgrades
Figure 8-15

8.6 Subtending Rings

Subtending rings reduce the number of nodes and cards required and reduce external shelf-to-shelf
cabling. The ONS 15600 SDH supports a maximum of 32 two-fiber MS-SPRings. If all rings have an
STM-64 line rate, the maximum is 16 two-fiber MS-SPRings.
with multiple subtending rings.
78-18400-01
ONS 15600 SDH SNCP Ring to MS-SPRing Integrated DRI Handoff
Node 5
Node 4
Node 8
Path Selector
Bridge
Node 1
SNCP
MS-SPRing
Node 7
Cisco ONS 15600 SDH Reference Manual, Release 9.0
8.6 Subtending Rings
Node 2
Node 3
Node 6
Figure 8-16 shows an ONS 15600 SDH
8-17