1-13
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 1 General Troubleshooting
1.2.3 Perform an XC Loopback on the Source Optical Port
b.
Choose the appropriate state (
Unlocked
;
Locked,disabled
;
Locked,maintenance
;
Unlocked,automaticInservice
) from the Admin State column for the port being tested. If multiple
ports are available, select the appropriate row for the desired port. (The new administrative state will
override the loopback.)
c.
Click
Apply
.
d.
Click
Yes
in the confirmation dialog box.
Step 9
Clear the terminal loopback circuit before testing the next segment of the network circuit path:
a.
Click the
Circuits
tab.
b.
Choose the loopback circuit being tested.
c.
Click
Delete
.
d.
Click
Yes
in the Delete Circuits dialog box. Do not check any check boxes.
Step 10
Complete the
“1.2.3 Perform an XC Loopback on the Source Optical Port” procedure on page 1-13
1.2.3 Perform an XC Loopback on the Source Optical Port
Note
This procedure is performed from an STM-N card or ASAP card optical port to test the cross-connect
circuit connection.
Note
You can perform an XC loopback on either the circuit source working or the protect port of a 1+1
protection group.
Note
XC loopbacks do not require on-site personnel.
The XC loopback test is available for STM-16, STM-64, and ASAP cards and occurs on an optical circuit
transiting the SSXC card in a network circuit. Completing a successful XC loopback from an optical port
through the SSXC card eliminates the SSXC card as the source of trouble for a faulty circuit.
shows an example of an XC loopback path on a source STM-N port.
Figure 1-8
XC Loopback on a Source
STM
-N Port
Complete the
“Create the XC Loopback on the Source-Node Optical Port” procedure on page 1-14
.
XC
Test Set
STM-Ny
STM-Nx
159632
Содержание Cisco ONS 15600 SDH
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