Perform A Facility Loopback On A Destination Xtc Card; Figure 12-17 Facility Loopback On A Destination Xtc Card - Cisco ONS 15327 User Documentation

Network Test Procedures
Procedure: Test the Destination XTC Card
Replace the suspect card with a known-good card.
Step 1
Resend test-set traffic on the loopback circuit with a known-good card.
Step 2
If the test set indicates a good circuit, the problem was probably the defective card.
Step 3
a.
b.
c.

12.10.5 Perform a Facility Loopback on a Destination XTC Card

The final test is a facility loopback performed on the last port in the circuit, in this case the XTC card in
the destination node. Completing a successful facility loopback on this card eliminates the possibility
that the destination node cabling, MIC card, or line interface is responsible for a faulty circuit.

Figure 12-17 Facility loopback on a destination XTC card

MIC
Performing a loopback on an in-service circuit is allowed but is service-affecting.
Caution
Note Loopbacks operate only on in-service ports.
Cisco ONS 15327 User Documentation, R3.3
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Return the defective card to Cisco through the returned materials authorization (RMA) process. Call
the Cisco Technical Assistance Center (TAC) at 1-877-323-7368 to open an RMA case.
Replace the defective XTC card.
Proceed to the "Perform a Facility Loopback on a Destination XTC Card" procedure on page
ONS 15327
Source
XTC
OC-N
ONS 15327
Destination
XTC
OC-N MIC
DS-N
DS-N
Facility loopback
Chapter 12 Maintenance
Test Set A
June 2002
12-30.