Chapter 2 Alarm Troubleshooting

2.7.57 EOC-L

Note If ports managed into IS administrative state are not receiving signals, the LOS alarm is either raised or remains, and the port service state transitions to OOS-AU,FLT.

Step 7 For all nodes, if the card is in service, use an optical test set to determine whether signal failures are present on fiber terminations. For specific procedures to use the test set equipment, consult the manufacturer.

Caution Using an optical test set disrupts service on the OC-N port. It could be necessary to manually switch traffic carrying circuits over a protection path. See the “2.10.1 Protection Switching, Lock Initiation, and Clearing” section on page 2-147for commonly used switching procedures.

Step 8 If no signal failures exist on terminations, measure power levels to verify that the loss is within the parameters of the receiver. Refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual for card power levels.

Step 9 If loss is within parameters, ensure that fiber connectors are securely fastened and properly terminated.

Step 10 If fiber connectors are properly fastened and terminated, complete the “Soft- or Hard-Reset a Controller Card” procedure on page 2-153.

Caution Avoid soft-resetting multiple ONS 15310-MA cards at one time; doing so might cause an unexpected traffic hit.

Wait ten minutes to verify that the card you reset completely reboots.

Step 11 If the controller card reset does not clear the alarm, delete the problematic SDCC termination by completing the following steps:

a.From card view, click View > Go to Previous View if you have not already done so.

b.Click the Provisioning > Comm Channels > SDCC tabs.

c.Highlight the problematic DCC termination.

d.Click Delete.

e.Click Yes in the Confirmation Dialog box.

Step 12 Recreate the SDCC termination. Refer to the “Turn Up Network” chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide for procedures.

Step 13 Verify that both ends of the DCC have been recreated at the optical ports.

Step 14 If the alarm has not cleared, call Cisco TAC (1-800-553-2447).

2.7.57 EOC-L

Default Severity: Minor (MN), Non-Service-Affecting (NSA)

SONET Logical Object: OCN

The Line DCC (LDCC) Termination Failure alarm occurs when the ONS 15310-CL or ONS 15310-MA loses its LDCC termination. The LDCC consists of nine bytes, D4 through D12, that convey information about OAM&P and network management information in the SONET overhead.

Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0

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Cisco Systems ONS 15310-CL, ONS 15310-MA manual Eoc-L, Click the Provisioning Comm Channels Sdcc tabs
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ONS 15310-CL, ONS 15310-MA specifications

Cisco Systems has long been a leader in networking and telecommunications technology, and among its impressive lineup of products, the Cisco ONS 15310 series stands out as an essential solution for optical networking. This series includes models such as the ONS 15310-MA, ONS 15310-CL, and ONS 15310-CA, each designed to meet the diverse needs of service providers and enterprises seeking to enhance their optical transport networks.

The Cisco ONS 15310-MA is an advanced multi-service platform designed for metropolitan area networks. It facilitates the seamless transport of data, voice, and video over optical networks. One of its main features is its ability to support a variety of interfaces, including Ethernet, SONET/SDH, and Wavelength Division Multiplexing (WDM), allowing users to integrate multiple services into a single platform. Additionally, the ONS 15310-MA supports advanced traffic management and Quality of Service (QoS) features to prioritize critical applications and ensure consistent performance.

The ONS 15310-CL variant is tailored for more specific applications, providing enhanced capabilities aimed at delivering carrier-grade services. It features a robust architecture that accommodates high-capacity traffic without compromising reliability. This model emphasizes low power consumption and a compact design, making it suitable for deployment in space-constrained environments. The ONS 15310-CL also supports a wide range of optical interfaces, making it highly flexible for various network configurations.

In terms of technologies, the Cisco ONS 15310 series leverages Optical Transport Network (OTN) capabilities, providing high efficiency and greater bandwidth utilization. OTN technology enables efficient error correction and adds resilience to the network through its built-in protection mechanisms. Furthermore, the series supports seamless integration with existing IP/MPLS networks, creating a cohesive infrastructure as organizations evolve their networking requirements.

One of the defining characteristics of the ONS 15310 series is its focus on scalability. Network operators can start with a modest deployment and gradually expand capacity as demand grows. This adaptability is complemented by Cisco's comprehensive management and monitoring tools, providing operators with real-time insights into network performance and facilitating proactive management.

In conclusion, the Cisco ONS 15310-MA and ONS 15310-CL models represent sophisticated solutions for modern optical networks. With their versatile features, advanced technologies, and robust design, they empower service providers and enterprises to build resilient, high-capacity networks that meet the demands of today’s data-driven world.
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