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Cisco ONS 15600 SDH Reference Manual, Release 9.0
78-18400-01
Chapter 8 SDH Topologies and Upgrades
8.6 Subtending Rings
Figure 8-15
ONS 15600 SDH SNCP Ring to MS-SPRing Integrated DRI Handoff
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.
shows an ONS 15600 SDH
with multiple subtending rings.
Path Selector
Bridge
159572
SNCP
MS-SPRing
Node 4
Node 3
Node 1
Node 5
Node 2
Node 8
Node 6
Node 7