Troubleshooting guide

5-31
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-02
Chapter 5 Troubleshooting Switch Router ATM Interface Connections
Troubleshooting OC-3c, OC-12c, and OC-48c Interfaces
Table 5-1 describes the Port status and Active defect errors the might appear, the cause of the error, and
a recommended solution.
If you determine that the physical interface is configured incorrectly, refer to the “Configuring
Interfaces” chapter in the ATM Switch Router Software Configuration Guide.
If the configuration of the interface is not the problem, use the information in OAM Loopback Testing,
page 5-9 to configure a hard loopback to test the interface.
Next, see the Using the debug Commands to Troubleshoot an Interface, page 5-19 to further troubleshoot
the interface.
Tabl e 5-6 OC-3c, OC-12c, and OC-48c Interface Module show controller Display
Field
Indication
(Severity) Error and Cause Recommendation
Port status Good Signal None None
Errors could be:
SECTION LOS
SECTION LOF
LINE AIS
LINE RDI
PATH LOP (Path
Loss of Pointer)
PATH AIS
PATH RDI
Invalid OOCD
(out of cell
delineation)
See Table 5-1 for more information about these errors.
Loopback: None None None
Line
Diag
PIF
Loopback connections are for testing
only.
Use the no loopback command on the
interface to disable loopback testing.
TX Led: Traffic Pattern Any other indication is an alarm. See Table 5-5 for LED descriptions.
RX Led: Traffic Pattern Any other indication is an alarm. See Table 5-5 for LED descriptions.
Framing mode: sts-3c It should match the framing mode
configuration of the destination port.
Check the framing mode configuration on
the destination port.
Cell payload
scrambling
on It should match the cell scrambling
configuration of the destination port.
Check the cell scrambling configuration
of the destination port.
Sts-stream
scrambling
on It should match the Sts-stream
scrambling configuration of the
destination port.
Check the Sts-stream scrambling
configuration of the destination port.
Active Alarms: None None None
See Table 5-1 for descriptions of the active alarms that might appear.
Active Defects: None None None
See Table 5-1 for descriptions of the active Defects that might appear.