1-41
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 1 General Troubleshooting
1.3.5 Perform a Facility Loopback on a Destination-Node Ethernet Port
Caution
Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,
perform an external switch if a switch has not already occurred. See the procedures in the
“2.8.2 Protection Switching, Lock Initiation, and Clearing” section on page 2-123
. For more
information, refer to the “Maintain the Node” chapter of the
Cisco ONS 15600 SDH Procedure Guide
.
Step 5
Resend test traffic on the loopback circuit with a known-good card.
Step 6
If the test set indicates a good circuit, the problem was probably the defective card. Return the defective
card to Cisco through the RMA process. Contact Cisco Technical Support (1 800 553-2447).
Step 7
Complete the
“Replace an I/O Card” procedure on page 2-134
for the defective card.
Step 8
Clear the terminal loopback on the port:
a.
Double-click the intermediate-node ASAP card with the terminal loopback.
b.
Click the
Maintenance > Ethernet > Loopback > Port
tabs.
c.
Select
None
from the Loopback Type column for the port being tested.
d.
Select the appropriate state (
Unlocked
;
Locked,disabled
;
Locked,maintenance
) in the Admin
State column for the port being tested.
e.
Click
Apply
.
f.
Click
Yes
in the confirmation dialog box.
Step 9
Clear the terminal loopback circuit:
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
“1.3.5 Perform a Facility Loopback on a Destination-Node Ethernet Port” procedure on
.
1.3.5 Perform a Facility Loopback on a Destination-Node Ethernet Port
You perform a facility loopback test for ASAP card Ethernet port at the destination port to determine
whether this local port is the source of circuit trouble. The example in
shows a facility
loopback being performed on an Ethernet port.
Figure 1-16
Facility Loopback on a Destination-Node Ethernet Port
Destination
ONS Node
Ethernet
Ethernet
XC
Source
ONS Node
Intermediate
ONS Node
Test Set
Ethenet
XC
Ethernet
Ethernet
XC
Ethernet
137606
Содержание Cisco ONS 15600 SDH
Страница 18: ...Contents xviii Cisco ONS 15600 SDH Troubleshooting Guide R8 0 July 2010 ...
Страница 20: ...Figures xx Cisco ONS 15600 SDH Troubleshooting Guide R8 0 July 2010 ...
Страница 30: ...xxx Cisco ONS 15600 SDH Troubleshooting Guide R8 0 July 2010 About this Guide ...
Страница 256: ...3 8 Cisco ONS 15600 SDH Troubleshooting Guide R8 0 July 2010 Chapter 3 Transient Conditions 3 3 28 WKSWPR ...
Страница 306: ...4 50 Cisco ONS 15600 SDH Troubleshooting Guide R8 0 July 2010 Chapter 4 Error Messages ...
Страница 318: ...Index IN 12 Cisco ONS 15600 SDH Troubleshooting Guide R8 0 July 2010 ...