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1.5.1 Perform a Facility (Line) Loopback on a Source-Node MXP/TXP/FC_MR Port
Figure 1-34
Test Set
Performing a loopback on an in-service circuit is service-affecting.
Caution
Complete the
procedure on page
Create the Facility (Line) Loopback on the Source-Node MXP/TXP/FC_MR Port
Connect an optical test set to the port you are testing.
Step 1
Note
Use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. The Tx and Rx terminals connect to the same port.
Adjust the test set accordingly.
Step 2
In CTC node view, double-click the card to display the card view.
Step 3
Click the Maintenance > Loopback tab.
Step 4
Choose Locked,maintenance from the Admin State column for the port being tested. If this is a
Step 5
multiport card, select the appropriate row for the desired port.
Choose Facility (Line) from the Loopback Type column for the port being tested. If this is a multiport
Step 6
card, select the appropriate row for the desired port.
Click Apply.
Step 7
Click Yes in the confirmation dialog box.
Step 8
Note
Complete the
Step 9
page
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
1-82
Facility (Line) Loopback on a Circuit Source MXP/TXP/FC_MR Port
Source
ONS Node
MXP
XC
"Create the Facility (Line) Loopback on the Source-Node MXP/TXP/FC_MR Port"
1-82.
Refer to the manufacturer's instructions for detailed information about connection and setup of
the optical test set.
It is normal for a
"LPBKFACILITY (TRUNK)" condition on page 2-171
(FCMR)" condition on page 2-168
you remove the loopback.
"Test and Clear the MXP/TXP/FC_MR Facility (Line) Loopback Circuit" procedure on
1-83.
Destination
TXP
MXP
to appear during loopback setup. The condition clears when
Chapter 1
General Troubleshooting
ONS Node
XC
TXP
or a
"LPBKFACILITY
July 2005
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