12-30
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 12 Maintenance
Network Test Procedures
Procedure: Test the Destination XTC Card
Step 1
Replace the suspect card with a known-good card.
Step 2
Resend test-set traffic on the loopback circuit with a known-good card.
Step 3
If the test set indicates a good circuit, the problem was probably the defective card.
a.
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.
b.
Replace the defective XTC card.
c.
Proceed to the
“Perform a Facility Loopback on a Destination XTC Card” procedure on page 12-30
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
Caution
Performing a loopback on an in-service circuit is allowed but is service-affecting.
Note
Loopbacks operate only on in-service ports.
MIC
OC-N
OC-N
DS-N
DS-N
Facility loopback
Test Set A
XTC
XTC
ONS 15327
Source
ONS 15327
Destination
76192
MIC
Содержание ONS 15327
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