Cisco ONS 15454 Troubleshooting Manual page 25

Chapter 1 General Troubleshooting
Choose None from the Loopback Type column for the port being tested.
Step 4
Choose the appropriate state (IS, OOS, OOS_AINS) from the State column for the port being tested.
Step 5
Click Apply.
Step 6
Click Yes in the confirmation dialog box. Proceed to
Step 7
If the test set indicates a faulty circuit, the problem is probably a defective EIA. Return the defective EIA
Step 8
to Cisco through the RMA process. Contact Cisco TAC (1 800 553-2447).
Replace the faulty EIA. See the
Step 9
Resend test traffic on the loopback circuit with known-good cabling, a known-good card, and the
Step 10
replacement EIA. If the test set indicates a faulty circuit, repeat all of the facility loopback procedures.
If the test set indicates a good circuit, the problem was probably the defective EIA. Clear the facility
Step 11
(line) loopback by clicking the Maintenance > Loopback tabs, Maintenance > DS1 tabs, or
Maintenance > DS3 tabs.
Step 12 Choose None from the Loopback Type column for the port being tested.
Step 13 Choose the appropriate state (IS, OOS, OOS_AINS) from the State column for the port being tested.
Step 14 Click Apply.
Click Yes in the confirmation dialog box.
Step 15
Complete the
Step 16
1.3.6 Perform a Hairpin Test on a Destination Node Port (East to West)
The hairpin test is performed on the cross-connect card in the network circuit. A hairpin circuit uses the
same port for both source and destination. Completing a successful hairpin through the card isolates the
possibility that the cross-connect card is the cause of the faulty circuit.
of a hairpin loopback on a destination node port.
Figure 1-15 Hairpin on a Destination Node Port
DS-N
The ONS 15454 does not support simplex operation on the XC10G cross-connect card. Two
Note
cross-connect cards of the same type must be installed for each node.
November 2004
"Replace an Electrical Interface Assembly" procedure on page
"Perform a Hairpin Test on a Source Node Port (West to East)" procedure on page
Source
ONS Node
XC OC-N
1.3.6 Perform a Hairpin Test on a Destination Node Port (East to West)
Step 16.
Destination
ONS Node
OC-N XC DS-N
Cisco ONS 15454 Troubleshooting Guide, R4.6
3-17.
1-12.
Figure 1-15 shows an example
Test Set
1-25