Create A Terminal Loopback On Intermediate-Node Oc-N, G-Series, Mxp, Or Txp Ports - Cisco ONS 15454 Troubleshooting Manual

Chapter 1 General Troubleshooting
Figure 1-25 Terminal Loopback on an Intermediate-Node OC-N Port
Source
ONS Node
OC-N
Test Set
Caution Performing a loopback on an in-service circuit is service-affecting.

Create a Terminal Loopback on Intermediate-Node OC-N, G-Series, MXP, or TXP Ports

This procedure does not apply to Software R4.6 E-Series Ethernet, ML-Series Ethernet, and DWDM
Note
cards.
Connect an optical test set to the port you are testing:
Step 1
Note
a.
b.
c.
Step 2 Use CTC to set up the terminal (inward) loopback on the test port:
a.
b.
c.
d.
e.
f.
g.
h.
November 2004
1.5.5 Create a Terminal (Inward) Loopback on Intermediate-Node OC-N, G-Series, MXP, or TXP Ports
XC OC-N
Refer to the manufacturer's instructions for detailed information about connection and setup of
the optical test set.
If you just completed the "Create a Facility (Line) Loopback on an Intermediate-Node OC-N,
G-Series, MXP, or TXP Port" section on page
node port.
If you are starting the current procedure without the optical test set hooked up to the source port,
use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. Both Tx and Rx connect to the same port.
Adjust the test set accordingly.
In node view, click the Circuits tab and click Create.
In the Circuit Creation dialog box, choose the type and size, such as an STS-1.
Click Next.
In the next Circuit Creation dialog box, give the circuit an easily identifiable name such as
"OCn1toOCn4."
Leave the Bidirectional check box checked.
Click Next.
In the Circuit Creation source dialog box, select the same Node, card Slot, Port, and STS (or VT)
where the test set is connected.
Click Next.
Intermediate
ONS Node
OC-N XC OC-N
1-48, leave the optical test set hooked up to the source
Cisco ONS 15454 Troubleshooting Guide, R4.6
Destination
ONS Node
OC-N XC OC-N
1-51