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Cisco ONS 15327 Troubleshooting Guide, R3.4
March 2004
Chapter 2 Alarm Troubleshooting
Alarm Procedures
2.6.131 PDI-P
• Not Alarmed (NA), Non-Service Affecting (NSA)
A PDI Path (PDI-P) condition indicates a signal label mismatch failure (SLMF). An invalid signal label
C2 byte in the SONET path overhead causes an SLMF. The C2 byte tells the equipment what the SONET
payload envelope contains and how it is constructed. It enables a SONET device to transport multiple
types of services.
The ONS 15327 encounters an SLMF when the payload, such as an ATM, does not match what the signal
label is reporting. An AIS condition (see page 2-16) often accompanies the PDI-P condition. If the PDI-P
is the only condition reported with the AIS condition (see page 2-16), clear the PDI-P condition to clear
the AIS condition. PDI-P can also occur during an upgrade, but usually clears itself and is not a valid
condition.
A PDI-P condition reported on the port of an OC-N card supporting a G1000-2 card circuit might result
from the end-to-end Ethernet link integrity feature of the G1000-2. If the link integrity is the cause, it
typically is accompanied by an a TPTFAIL (G-Series) alarm (see page 2-120) or a CARLOSS (G Series)
alarm (see page 2-33) reported against one or both Ethernet ports terminating the circuit. If TPTFAIL or
CARLOSS are reported against one or both of the Ethernet ports, troubleshooting the accompanying
alarm clears the PDI-P condition.
Warning
Invisible laser radiation might be emitted from the end of the unterminated fiber cable or connector.
Do not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100
mm might pose an eye hazard. Use of controls or adjustments or performance of procedures other than
those specified might result in hazardous radiation exposure.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15327.
Plug the wristband cable into the ESD jack located between the top high-speed and XTC slots.
Procedure: Clear the PDI-P Condition
Step 1 Verify that all circuits terminating in the reporting card are in an active state:
a. Click the Circuits tab.
b. Verify that the State column lists the port as active.
c. If the State column lists the port as incomplete, wait up to ten minutes for the ONS 15327 to
initialize fully. If the incomplete state does not change after full initialization, log onto
http://www.cisco.com/tac for more information or call TAC to report a service-affecting problem
(1-800-553-2447).
Step 2 After determining that the port is active, ensure that the signal source to the card reporting the alarm is
working.
Step 3 If traffic is affected, complete the “Delete a Circuit” procedure on page 2-128.
Caution Deleting a circuit might affect traffic.