Chapter 2 Alarm Troubleshooting

2.7.201 SD-V

Clear the SD-P Condition

Step 1 Complete the “Clear the SD-L Condition” procedure on page 2-124.

Step 2 If the condition does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447).

2.7.201 SD-V

Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)

SONET Logical Objects: VT-MON, VT-TERM

An SD-V condition is similar to the “SD” condition on page 2-122, but it applies to the VT layer of the SONET overhead.

For path protection protected circuits, the BER threshold is user-provisionable and has a range for SD from 1E–9 dBm to 1E–5 dBm. An SD-V condition does not cause a switch from the working port to the protect port at the path (STS) level.

The BER increase that causes the alarm is sometimes caused by a physical fiber problem such as a poor fiber connection, a bend in the fiber that exceeds the permitted bend radius, or a bad fiber splice.

SD causes the port to switch from working to protect. The SD condition clears when the BER level falls to one-tenth of the threshold level that triggered it.

Clear the SD-V Condition

Step 1 Complete the “Clear the SD (DS1, DS3) Condition” procedure on page 2-123.

Step 2 If the condition does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447).

2.7.202 SF

Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)

SONET Logical Objects: DS1, DS3

A Signal Fail condition occurs when the quality of the signal has exceeded the BER signal failure threshold. Signal failure is defined by Telcordia as a “hard failure” condition. The SD and SF conditions both monitor the incoming BER error rate and are similar conditions, but SF is triggered at a higher BER than SD.

The BER threshold is user-provisionable and has a range for SF from 1E–5 dBm to 1E–3 dBm.

Warning Invisible laser radiation could 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 could pose an eye hazard. Statement 1056

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

2-125

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Cisco Systems ONS 15310-MA, ONS 15310-CL manual Sd-V, 202 SF, Clear the SD-P Condition, Clear the SD-V Condition, 125
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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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