Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño

OL-4556-01

BLSR Fiber Connections

Plan your fiber connections and use the same plan for all BLSR nodes. For example, make the
East port the farthest slot to the right and the West port the farthest left. Plug fiber connected to
an East port at one node into the West port on an adjacent node. Figure 2-50 shows fiber
connections for a 2-Fiber BLSR with trunk cards in Slot 5 (West) and Slot 12 (East).

Figure 2-50: Connecting Fiber to a 4-Node, 2-Fiber BLSR

For 4-Fiber BLSRs, use the same East—West connection pattern for the working and protect
fibers. Do not mix working and protect card connections. The BLSR will not function if working
and protect cards are interconnected. Figure 2-51 shows fiber connections for a 4-Fiber BLSR.
Slot 5 (West) and Slot 12 (East) carry the working traffic. Slot 6 (West) and Slot 13 (East) carry
the protect traffic.

Figure 2-51: Connecting Fiber to a 4-Node, 4-Fiber BLSR