CHAPTER
6-1
Cisco ONS 15454 Procedure Guide, R5.0
August 2005
6
Create Circuits and VT Tunnels
Note The terms “Unidirectional Path Switched Ring” and “UPSR” may appear in Cisco literature. These terms
do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration.
Rather, these terms, as well as “Path Protected Mesh Network” and “PPMN,” refer generally to Cisco’s
path protection feature, which may be used in any topological network configuration. Cisco does not
recommend using its path protection feature in any particular topological network configuration.
This chapter explains how to create Cisco ONS 15454 electrical circuits, tunnels, OC-N circuits,
Ethernet circuits, and virtual concatenated (VCAT) circuits. For additional information about
ONS 15454 circuits, refer to the “Circuits and Tunnels” chapter in the Cisco ONS 15454 Reference
Manual.
Before You Begin
Before performing any of the following procedures, investigate all alarms and clear any trouble
conditions. Refer to the Cisco ONS 15454 Troubleshooting Guide as necessary.
This section lists the chapter procedures (NTPs). Turn to a procedure for applicable tasks (DLPs).
1. NTP-A127 Verify Network Turn Up, page 6-4—Complete this procedure before you create any
circuits.
2. NTP-A181 Create an Automatically Routed DS-1 Circuit, page 6-6—Complete as needed.
3. NTP-A182 Create a Manually Routed DS-1 Circuit, page 6-11—Complete as needed.
4. NTP-A183 Create a Unidirectional DS-1 Circuit with Multiple Drops, page 6-14—Complete as
needed.
5. NTP-A184 Create an Automatically Routed DS-3 Circuit, page 6-18—Complete as needed.
6. NTP-A185 Create a Manually Routed DS-3 Circuit, page 6-23—Complete as needed.
7. NTP-A186 Create a Unidirectional DS-3 Circuit with Multiple Drops, page 6-25—Complete as
needed.
8. NTP-A133 Create an Automatically Routed VT Tunnel, page 6-29—Complete as needed.
9. NTP-A134 Create a Manually Routed VT Tunnel, page 6-31—Complete as needed.
10. NTP-A187 Create a VT Aggregation Point, page 6-33—Complete as needed.
11. NTP-A135 Test Electrical Circuits, page 6-36—Complete this procedure after you create an
electrical circuit.
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