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Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 1 General Troubleshooting
1.3.3 Create a Facility Loopback on an Intermediate-Node Ethernet Port
d.
Click
Yes
in the Delete Circuits dialog box. Do not check any check boxes.
Step 10
Complete the
“1.3.3 Create a Facility Loopback on an Intermediate-Node Ethernet Port” procedure on
.
1.3.3 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 1-14
Facility Loopback on an Intermediate-Node Ethernet Port
Caution
Performing a loopback on an in-service circuit is service-affecting.
Note
Facility loopbacks require on-site personnel.
Complete the
“Create a Facility Loopback on an Intermediate-Node Ethernet Port” procedure on
.
Create a Facility Loopback on an Intermediate-Node Ethernet Port
Step 1
Connect an optical test set to the ASAP card Ethernet port you are testing: If you are starting the current
procedure without the optical test set hooked up to the source ASAP card Ethernet 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.
Note
For specific procedures to use the test set equipment, consult the manufacturer.
Step 2
Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)
Step 3
Use CTC to set up the facility 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_PATH_CIRCUIT, and circuit
number, such as 1.
c.
Click
Next
.
Destination
ONS Node
Ethernet
Ethernet
XC
Source
ONS Node
Intermediate
ONS Node
Ethernet
Ethernet
XC
Test Set
Ethernet
XC
Ethernet
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Содержание Cisco ONS 15600 SDH
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