12-2
Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 12 SONET Topologies and Upgrades
12.1 SONET Rings and TCC2/TCC2P Cards
Table 12-1 ONS 15454 Rings with Redundant TCC2/TCC2P Cards
Ring Type Maximum Rings per Node
BLSRs 5
2-Fiber BLSR 5
4-Fiber BLSR 1
Path protection with SDCC 341,2
Path protection with LDCC 143,4