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Cisco ONS 15454 Reference Manual, R8.5.x
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Chapter 12 SONET Topologies and Upgrades
12.4.3 Path Protection/BLSR DRI Hando ff Configurations
12.4.3 Path Protection/BLSR DRI Handoff Configurations
Path protection configurations and BLSRs can also be interconnected. In BLSR/path protectionDRI
handoff configurations, primary and secondary nodes can be the circ uit source or destination, which is
useful when non-DCC optical interconnecting links are present. Figure 12-24 shows an example of a
path protection to BLSR traditional DRI handoff.
Figure 12-24 ONS 15454 Path Protection to BLSR Traditional DRI Handoff
Figure 12-25 shows an example of a path protection to BLSR integrated D RI handoff.
Path Selector
Secondary Path (protection)
Primary Path (working)
Bridge
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Path Protection Configuration
BLSR
Node 1
Node 5 Node 2
Node 10
Node 6 Node 7
Node 4 Node 3
Node 8
Node 9