Create A Terminal Loopback On Intermediate-Node Mxp Or Txp Ports - Cisco ONS 15454 DWDM Manual

1.2.4 Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports

c.
d.
e.
Complete the
Step 6
on page
1.2.4 Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports
In the next troubleshooting test, you perform a terminal loopback on the intermediate-node port to isolate
whether the intermediate client or trunk port is causing circuit trouble. In the example situation in
Figure
you successfully complete a terminal loopback on the node, this node is excluded from possible sources
of circuit trouble.
Figure 1-6 Terminal Loopback on an Intermediate-Node MXP or TXP Port
Test Set
Source
ONS Node
TXP TXP
Performing a loopback on an in-service circuit is service-affecting.
Caution
Terminal loopbacks require on-site personnel.
Note
Complete the
page
Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
1-16
Choose the appropriate state to place the port in service, out of service and disabled, out of service
for maintenance, or automatically in service from the Admin State column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"1.2.4 Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports" procedure
1-16.
1-6, the terminal loopback is performed on an intermediate MXP or TXP port in the circuit. If
Intermediate
ONS Node
TXP
Regenerate
"Create a Terminal Loopback on Intermediate-Node MXP or TXP Ports" procedure on
1-17.
Client port
TXP TXP
Chapter 1 General Troubleshooting
Destination
ONS Node
TXP
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