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Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 6 Circuits and Tunnels
Creating VC Low-Order Path Tunnels for Port Grouping
Note In SDH Software R3.3, if you are creating an SNCP circuit, deselect the Fully Protected Path
checkbox.
CTC creates a primary and alternate circuit route (virtual SNCP) based on the nodal diversity option you
select:
• Nodal Diversity Required—Ensures that the primary and alternate paths within the extended SNCP
mesh network portions of the complete circuit path are nodally diverse. (For information about
extended SNCP mesh network, see the “Extended SNCP Mesh Networks” section on page 5-58.)
• Nodal Diversity Desired—Specifies that node diversity should be attempted, but if node diversity is
not possible, CTC creates link diverse paths for the extended SNCP mesh network portion of the
complete circuit path.
• Link Diversity Only—Specifies that only link-diverse primary and alternate paths for extended
SNCP mesh network portions of the complete circuit path are needed. The paths may be
node-diverse, but CTC does not check for node diversity.
Figure 6-6 Setting circuit routing preferences
Step 11
Click Finish. CTC creates the circuit and returns to the Circuits window (Figure 6-7).
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Circuit Creation dialog box
routing preferences
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