Cisco ONS 15454 Troubleshooting Manual page 122

1.5.4 Create a Facility Loopback on an Intermediate-Node Ethernet Port
Step 2 Resend test traffic on the loopback circuit.
If the test set indicates a faulty circuit, the problem is probably the defective card. Return the defective
Step 3
card to Cisco through the RMA process. Contact Cisco Technical Support at 1 800 553-2447 and
proceed to Step 4. If the test does not indicate a faulty circuit, proceed to Step 5.
Complete the
Step 4
defective card.
If the test set indicates a good circuit, the cross-connect card might have had a temporary problem that
Step 5
was cleared by the side switch. Clear the hairpin circuit:
a.
b.
c.
d.
e.
Complete the
Step 6
page
1.5.4 Create a Facility Loopback on an Intermediate-Node Ethernet Port
Performing the facility loopback test on an intermediate port isolates whether this node is causing circuit
failure. It is shown in
Figure 1-33 Facility Loopback on an Intermediate-Node Ethernet Port
Source
ONS Node
Ethernet
Test Set
Performing a loopback on an in-service circuit is service-affecting.
Caution
Facility loopbacks require on-site personnel.
Note
Complete the
page
Cisco ONS 15454 Troubleshooting Guide, R8.5
1-78
"Physically Replace an In-Service Cross-Connect Card" procedure on page 2-274
Click the Circuits tab.
Choose the hairpin circuit being tested.
Click Delete.
Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
Confirm that the hairpin circuit is deleted from the Circuits tab list.
"1.5.4 Create a Facility Loopback on an Intermediate-Node Ethernet Port" procedure on
1-78.
Figure 1-33.
XC Ethernet
"Create a Facility Loopback on an Intermediate-Node Ethernet Port" procedure on
1-79.
Intermediate
ONS Node
Ethernet XC Ethernet
Chapter 1 General Troubleshooting
Destination
ONS Node
Ethernet XC Ethernet
November 2009
for the