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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter7 Configuring APS
About Splitter Protection
Redundant switch fabric protection
Bidirectional and unidirectional path switching
The 1+1 path protection acrhitecture transmits the client signal on b oth the working and protection paths.
Note For an animated description of the APS implementation on the CiscoONS 15530, go to the following
URL:
http://www.cisco.com/mm/dyngraph/APS15530.html
About Splitter Protection
Splitter protection on the CiscoONS 15530 provides protection against facility failure, such as trunk
fiber cuts, but not ITU laser failures or client equipment failures. Splitter line cards internally replicate
the client optical signal and transmit it to both OADM modules. The Cisco ONS 15530 support s splitter
versions of the transponder line card and the 10-Gbps ITU tr unk c ard.
Figure 7-1 shows splitter protection with a transponder line card.
Figure7-1 Splitter Protection Scheme
Transponder
line cards
OADM
modules
West
East
SRC
LRC
Client optics ITU optics
Performance
monitor
CPU
LRC
LRC
LRCLRC
OSC
OSC
Redundant
CPU switch
modules
Optical
fiber
connection
Electrical
backplane
connection
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