Blsr Fiber Connections - Cisco ONS 15454 Reference Manual

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SONET Topologies and Upgrades

12.2.5 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 slot to the left. Plug fiber connected to an east

port at one node into the west port on an adjacent node.

two-fiber BLSR with trunk cards in Slot 5 (west) and Slot 12 (east). Refer to the Cisco ONS 15454

Procedure Guide for fiber connection procedures.

Figure 12-11

For four-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 does not function if working and protect cards

are interconnected.

Slot 12 (east) carry the working traffic. Slot 6 (west) and Slot 13 (east) carry the protect traffic.

Always plug the transmit (Tx) connector of an OC-N card at one node into the receive (Rx)

connector of an OC-N card at the adjacent node. Cards display an SF LED when Tx and Rx

connections are mismatched.

Connecting Fiber to a Four-Node, Two-Fiber BLSR

Figure 12-12

shows fiber connections for a four-fiber BLSR. Slot 5 (west) and

12.2 12.2.5 BLSR Fiber Connections

Figure 12-11

shows fiber connections for a

Cisco ONS 15454 Reference Manual, R7.0.1