1-68
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.4.3 Perform a Facility (Line) Loopback on an Intermediate-Node Ethernet Port
d. Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
Step 7 Complete the “1.4.3 Perform a Facility (Line) Loopback on an Intermediate-Node Ethernet Port”
procedure on page 1-68.
1.4.3 Perform a Facility (Line) Loopback on an Intermediate-Node Ethernet Port
Performing the facility (line) loopback test on an intermediate port isolates whether this node is causing
circuit failure. It is shown in Figure 1-30.
Figure 1-30 Facility (Line) Loopback on an Intermediate-Node Ethernet Port
Caution Performing a loopback on an in-service circuit is service-affecting.
Complete the “Create a Facility (Line) Loopback on an Intermediate-Node Ethernet Port” procedure on
page 1-68.
Create a Facility (Line) Loopback on an Intermediate-Node Ethernet Port
Step 1 Connect an optical test set to the port you are testing:
Note Refer to the manufacturer’s instructions for detailed information about connection and setup of
the optical test set.
a. If you just completed the “1.4.2 Perform a Terminal (Inward) Loopback on a Source-Node Ethernet
Port” procedure on page 1-64, leave the optical test set hooked up to the source-node port.
b. If you are starting the current procedure without the optical test set hooked up to the source port
port, use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you
are testing. Both Tx and Rx connect to the same port.
Step 2 Adjust the test set accordingly.
Step 3 Use CTC to set up the facility (line) loopback on the test port:
a. In node view, click the Circuits tab and click Create.
b. In the Circuit Creation dialog box, choose the type, such as VC_HO, and number, such as 1.
c. Click Next.
Destination
ONS Node
Ethernet EthernetXC
Source
ONS Node
Intermediate
ONS Node
Ethernet EthernetXC
Test Set
Ethernet XC Ethernet
115790
To Next Page
Loading...
