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Cisco ONS 15454 Procedure Guide, R5.0
August 2005
Chapter 6 Create Circuits and VT Tunnels
NTP-A314 Create a Unidirectional OC-N Circuit with Multiple Drops
Figure 6-13 Setting Circuit Attributes for a Unidirectional OC-N Circuit
Step 8 If the circuit will be routed on a path protection, complete the “DLP-A218 Provision Path Protection
Selectors” task on page 19-12.
Step 9 Click Next.
Step 10 Complete the “DLP-A97 Provision an OC-N Circuit Source and Destination” task on page 17-98 for the
circuit you are creating.
Step 11 Uncheck Route Automatically. When Route Automatically is not selected, the Using Required
Nodes/Spans and Review Route Before Circuit Creation check boxes are unavailable.
Step 12 To set the circuit path protection, complete one of the following:
• To route the circuit on a protected path, leave Fully Protected Path checked and continue with
Step 13. Fully protected paths might or might not have path protection path segments (with primary
and alternate paths), and the path diversity options apply only to path protection path segments, if
any exist.
• To create an unprotected circuit, uncheck Fully Protected Path and continue with Step 17.
• To route the circuit on a BLSR protection channel, if available, uncheck Fully Protected Path,
check Protection Channel Access, click Yes in the Warning dialog box, then continue with Step 17.
Caution Circuits routed on BLSR protection channels are not protected and are preempted during BLSR
switches.
Step 13 If you selected Fully Protected Path in Step 12 and the circuit will be routed on a path protection, choose
one of the following:
• Nodal Diversity Required—Ensures that the primary and alternate paths within the path protection
portions of the complete circuit path are nodally diverse.
• Nodal Diversity Desired—Specifies that node diversity is preferred, but if node diversity is not
possible, CTC creates fiber-diverse paths for the path protection portion of the complete circuit path.
• Link Diversity Only—Specifies that only fiber-diverse primary and alternate paths for path
protection portions of the complete circuit path are needed. The paths might be node-diverse, but
CTC does not check for node diversity.
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