Cisco Systems 15454 SDH SDH Topologies and Upgrades

CHAPTER
11-1
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
11
SDH Topologies and Upgrades
This chapter explains Cisco ONS 15454 SDH topologies and upgrades. To provision topologies, refer to
the Cisco ONS 15454 SDH Procedure Guide.
Chapter topics include:
•11.1 SDH Rings and TCC2/TCC2P Cards, page 11-1
•11.2 Multiplex Section-Shared Protection Rings, page 11-2
•11.3 Subnetwork Connection Protection, page 11-13
•11.4 Dual Ring Interconnect, page 11-18
•11.5 Subtending Rings, page 11-26
•11.6 Linear ADM Configurations, page 11-28
•11.7 Extended SNCP Mesh Networks, page 11-29
•11.8 Four Node Configurations, page 11-31
•11.9 STM-N Speed Upgrades, page 11-31
11.1 SDH Rings and TCC2/TCC2P Cards
Table11-1 shows the SDH rings that can be created on each ONS 15454 SDH node using redundant
TCC2/TCC2P cards.
Table11-1 ONS 15454 SDH Rings with Redundant TCC2/TCC2P Cards
Ring Type Maximum Rings per Node
MS-SPRings1
1. MS-SPRing = multiplex section-shared protection ring
5
2-Fiber MS-SPRings 5
4-Fiber MS-SPRings 1
SNCP with SDCC 342 3
2. Total SDCC usage must be equal to or less than 84 SDCCs.
3. See the “11.3 Subnetwork Connection Protection” section on page11-13.
SNCP with LDCC 144 5
4. Total LDCC usage must be equal to or less than 28 LDCCs.
SNCP with LDCC and SDCC 266