11-24
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter11 SDH Topologies and Upgrades
11.4.2 SNCP Dual Ring Interconnect
Figure11-22 ONS 15454 SDH Integrated Dual Ring Interconnect
Path Selector
Primary Path - Primary
Return Path - Secondary
Return Path - Primary
Primary Path - Secondary
ONS 15454 SDH
SNCP #1
ONS 15454 SDH
SNCP #2
E1/E3/DS3I/GigE
Duplicate
Signals
Pass-through
Node
E1/E3/DS3I/GigE
Bridge
90393
Cross
Connect
Cross
Connect
ONS 15454 SDH DRI
Node 1 of 2 supporting
two-rings with integrated
high-order and low-order
path grooming