Perform A Facility Loopback On A Destination-Node Mxp, Txp, Xp, Or Adm-10G Port - Cisco NCS 2000 series Troubleshooting Manual

General Troubleshooting
Warning High-performance devices on this card can get hot during operation. To remove the card, hold it by the
faceplate and bottom edge. Allow the card to cool before touching any other part of it or before placing
it in an antistatic bag. Statement 201
Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this, perform
Caution
an external switch if a switch has not already occurred. Refer to the procedures in the
Lock Initiation, and Clearing, on page
Step 2 Resend test traffic on the loopback circuit with a known-good card.
Step 3
If the test set indicates no errors, the problem was probably the defective card. Return the defective card to Cisco through
the RMA process. Contact Cisco Technical Support 1 800 553 2447.
Step 4 Clear the terminal loopback on the port:
a) Double-click the source-node card with the terminal loopback.
b) Click the Maintenance > Loopback tabs.
c) Select None from the Loopback Type column for the port being tested.
d) 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.
e) Click Apply.
f) Click Yes in the confirmation dialog box.
Step 5
Complete the Perform a Facility Loopback on a Destination-Node MXP, TXP, XP, or ADM-10G Port, on page
Perform a Facility Loopback on a Destination-Node MXP, TXP, XP, or ADM-10G
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
page 21
Figure 7: Facility Loopback on a Destination-Node MXP or TXP Port
Caution
Performing a loopback on an in-service circuit is service-affecting.
Figure 7: Facility Loopback on a Destination-Node MXP or TXP Port, on
shows a facility loopback being performed on a TXP client or trunk port at a destination node.

Perform a Facility Loopback on a Destination-Node MXP, TXP, XP, or ADM-10G Port

443.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
Protection Switching,
21.
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