Filter
Top Products
11-27
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 11 SDH Topologies and Upgrades
11.5 Subtending Rings
Figure 11-25 ONS 15454 SDH with Multiple Subtending Rings
Figure 11-26 shows an SNCP ring subtending from an MS-SPRing. In this example, Node 3 is the only
node serving both the MS-SPRing and SNCP ring. STM-N cards in Slots 5 and 12 serve the MS-SPRing,
and STM-N cards in Slots 6 and 13 serve the SNCP ring.
Figure 11-26 SNCP Ring Subtending from an MS-SPRing
The ONS 15454 SDH can support five MS-SPRings on the same node. This allows you to deploy an
ONS 15454 SDH in applications requiring SDH Digital Cross-connect Systems (DCSs) or multiple SDH
add/drop multiplexers (ADMs).
SNCP
SNCP
or MS-SPRing
SNCP
SNCP
SNCP
or
MS-SPRing
71273
Node 3
Node 1
Node 2
MS-SPRing
SNCP
Node 4
Slot 13
Slot 12
Slot 12
Slot 12
Slot 13
Slot 6
Slot 5
Slot 5
Slot 5
Slot 6
71274