Cisco Cisco ONS 15600 SDH, Руководство по устранению неисправностей

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Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 1 General Troubleshooting
1.3.4 Create a Terminal Loopback on an Intermediate-Node Ethernet Port
Note For specific procedures to use the test set equipment, consult the manufacturer.
a.
If you just completed the “1.3.3 Create a Facility Loopback on an Intermediate-Node Ethernet Port”
procedure on page 1-35 for an ASAP card Ethernet port, leave the optical test set hooked up to the
intermediate-node port.
b.
If you are starting the current procedure without the optical test set hooked up to the source 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. (Refer to manufacturer instructions for test-set use.)
Step 3
Use CTC to set up the terminal 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 .
d.
In the next Circuit Creation dialog box, give the circuit an easily identifiable name such as
Eth1toEth4.
e. Leave the Bidirectional check box checked.
f.
Click Next .
g. In the Circuit Creation source dialog box, select the same Node, card Slot, Port, and VC where the
test set is connected.
h.
Click Next .
i.
In the Circuit Creation destination dialog box, use the same Node, card Slot, Port, and VC used for
the source dialog box.
j.
Click Next .
k. In the Circuit Creation circuit routing preferences dialog box, leave all defaults. Click Finish .
Step 4
Confirm that the newly created circuit appears on the Circuits tab list and that it is described in the Dir
column as a two-way circuit.
Note
It is normal for the “LPBKTERMINAL (GIGE)” condition on page 2-90 to appear during a
loopback setup. The condition clears when you remove the loopback.
Step 5
Create the terminal loopback on the intermediate port being tested:
a.
Go to the node view of the intermediate node:
•
Choose View > Go To Other Node from the menu bar.
•
Choose the node from the drop-down list in the Select Node dialog box and click OK .
b.
In node view, double-click the card that requires the loopback.
c.
Click the Maintenance > Ethernet > Loopback > Port tabs.
d.
Select Locked,maintenance from the Admin State column. If multiple ports are available, select
the row appropriate for the desired port.
e. Select Terminal from the Loopback Type column. If multiple ports are available, select the row
appropriate for the desired port.