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5-13
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 5 SONET Topologies
Bidirectional Line Switched Rings
Procedure: Create the BLSR DCC Terminations
Step 1 Log into the first node that will be in the BLSR.
Step 2 Click the Provisioning > Sonet DCC tabs.
Step 3 In the SDCC Terminations section, click Create.
Step 4 On the Create SDCC Terminations dialog, press Ctrl and click the two slots/ports that will serve as the
BLSR ports at the node. For example, Slot 5 (OC-48)/Port 1 and Slot 12 (OC-48)/ Port 1. For four-fiber
BLSRs, provision the working cards, but not the protect cards, as DCC terminations.
Step 5 Click OK.
Step 6 The slots/ports appear in the SDCC Terminations list.
Step 7 Complete Steps 2 – 5 at each node that will be in the BLSR.
Note The ONS 15454 uses the SONET Section layer DCC (SDCC) for data communications. It
does not use the Line DCCs; therefore, the Line DCCs are available to tunnel DCCs from
third-party equipment across ONS 15454 networks. For more detail, see the “Creating DCC
Tunnels” section on page 6-21.
Procedure: Enable the BLSR Ports
Step 1 Log into one of the nodes that will be in the BLSR.
Step 2 Double-click one of the OC-N cards that you configured as a DCC termination.
Step 3 Click the Provisioning > Line tabs.
Step 4 Click Status (Figure 5-13) and choose In Service.