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Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 6 Create Circuits and Low-Order Tunnels
NTP- D133 Create an Automatically Routed Low-Order Tunnel
d. The routing preferences for the new drop match those of the original circuit. However, you can
modify the following:
• If the original circuit was routed on a protected SNCP path, you can change the nodal diversity
options: Nodal Diversity Required, Nodal Diversity Desired, or Link Diversity Only. See
Step 13 for descriptions.
• If the original circuit was not routed on a protected path, the Protection Channel Access option
is available. See Step 12 for a description of the Protection Channel Access option.
e. Click OK. The new drop appears in the Drops list.
Step 24 If you need to create additional drops for the circuit, repeat Steps 22 and 23 to create the additional drops.
Step 25 Choose Close. The Circuits window appears.
Step 26 Verify that the new drops appear in the Destination column for the circuit that you edited. If they do not
appear, repeat Steps 5 through 25, making sure that all options are provisioned correctly.
Step 27 Complete the “NTP-D135 Test Low-Order Circuits” procedure on page 6-53. Skip this step if you built
a test circuit.
Stop. You have completed this procedure.
NTP-D133 Create an Automatically Routed Low-Order Tunnel
Note Low-order tunnels allow low-order VC12 and VC3 circuits to pass through intermediary
ONS 15454 SDH nodes without consuming low-order matrix resources on the cross-connect card. In
general, creating low-order tunnels is a good idea if you are creating many low-order circuits from the
same source and destination. Refer to the “Circuits and Tunnels” chapter in the Cisco ONS 15454 SDH
Reference Manual for more information.
Step 1 Complete the “DLP-D60 Log into CTC” task on page 17-49 at an ONS 15454 SDH on the network
where you will create the tunnel. If you are already logged in, continue with Step 2.
Step 2 If you want to assign a name to the tunnel source and destination ports before you create the circuit,
complete the “DLP-D314 Assign a Name to a Port” task on page 20-7. If you want CTC to assign a name
automatically based on circuit type, node name, and sequence number, continue with Step 3.
Step 3 From the View menu, choose Go to Network View.
Step 4 Click the Circuits tab, then click Create.
Step 5 In the Circuit Creation dialog box, complete the following fields:
• Circuit Type—Choose VC_LO_PATH TUNNEL.
Purpose This procedure creates an automatically routed low-order tunnel from
source to destination nodes.
Tools/Equipment None
Prerequisite Procedures NTP-D127 Verify Network Turn-Up, page 6-5
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Provisioning or higher
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