Cisco ONS 15454 Troubleshooting Manual page 147

Chapter 1 General Troubleshooting
d.
e.
f.
Step 6 Complete the
page
1.6.5 Perform a Facility Loopback on a Destination-Node FC_MR Port
You perform a facility loopback test at the destination port to determine whether this local port is the
source of circuit trouble. The example in
FC_MR port.
Figure 1-42 Facility Loopback on a Destination-Node FC_MR Port
ONS Node
MXP
Test Set
Performing a loopback on an in-service circuit is service-affecting.
Caution
Facility loopbacks require on-site personnel.
Note
Complete the
page
Create the Facility Loopback on a Destination-Node FC_MR Port
Connect an optical test set to the port you are testing:
Step 1
Note
a.
November 2009
Select the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) in the Admin State column for
the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"1.6.5 Perform a Facility Loopback on a Destination-Node FC_MR Port" procedure on
1-103.
Source
TXP
"Create the Facility Loopback on a Destination-Node FC_MR Port" procedure on
1-103.
For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
If you just completed the
procedure on page 1-101, leave the optical test set hooked up to the source-node port.
1.6.5 Perform a Facility Loopback on a Destination-Node FC_MR Port
Figure 1-42 shows a facility loopback being performed on an
Intermediate
ONS Node
MXP TXP
"1.6.4 Create a Terminal Loopback on Intermediate-Node FC_MR Ports"
Cisco ONS 15454 Troubleshooting Guide, R8.5
Destination
ONS Node
MXP TXP
1-103