Datasheet

Table Of Contents
12-25
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 12 SDH Topologies and Upgrades
12.5 Subtending Rings
Figure 12-24 ONS 15454 SDH SNCP to MS-SPRing Integrated DRI Handoff
12.5 Subtending Rings
The ONS 15454 SDH supports up to 84 SDH regenerator RS-DCCs or 28 MS-DCCs with TCC2/TCC2P
cards. See Table 12-1 on page 12-1 for ring and regenerator RS-DCC and MS-DCC information.
Subtending rings reduce the number of nodes and cards required and reduce external shelf-to-shelf
cabling. Figure 12-25 shows an ONS 15454 SDH with multiple subtending rings.
Path Selector
Bridge
115741
SNCP
MS-SPRing
Node 4 Node 3
Node 1
Node 5 Node 2
Node 8 Node 6
Node 7