Chapter 1 General Troubleshooting

1.11 Fiber and Cabling

1.11 Fiber and Cabling

This section explains problems typically caused by cabling connectivity errors. It also includes instructions for crimping CAT-5 cable and lists the optical fiber connectivity levels.

1.11.1 Bit Errors Appear for a Traffic Card

Symptom A traffic card has multiple bit errors.

Table 1-30describes the potential cause of the symptom and the solution.

Table 1-30 Bit Errors Appear for a Line Card

Possible Problem

Solution

 

 

Faulty cabling or low

Troubleshoot cabling problems using the “1.1 Network Troubleshooting

optical-line levels.

Tests” section on page 1-2. Troubleshoot low optical levels using procedures

 

in the “1.11.2 Faulty Fiber-Optic Connections” section on page 1-69.

 

Note

Bit errors on line (traffic) ports usually originate from cabling

 

 

problems or low optical-line levels. The errors can be caused by

 

 

synchronization problems, especially if pointer justification (PJ)

 

 

errors are reported. Use a test set whenever possible because the

 

 

cause of the errors could be external cabling, fiber, or external

 

 

equipment connecting to the node.

 

 

 

1.11.2 Faulty Fiber-Optic Connections

Symptom A line card has multiple SONET alarms and/or signal errors.

Table 1-31describes the potential causes of the symptom and the solutions.

Table 1-31 Faulty Fiber-Optic Connections

Possible Problem

Solution

 

 

Faulty fiber-optic

Faulty fiber-optic connections can be the source of SONET alarms and

connections.

signal errors. See the “Verify Fiber-Optic Connections” procedure on

 

page 1-70.

 

 

Faulty CAT-5 cables.

Faulty CAT-5 cables can be the source of SONET alarms and signal errors.

 

See the “1.11.2.1 Crimp Replacement LAN Cables” procedure on

 

page 1-71.

 

 

Warning Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do not view 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 may pose an eye hazard. Statement 1056

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

1-69

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Cisco Systems ONS 15310-MA manual Fiber and Cabling, Bit Errors Appear for a Traffic Card, Faulty Fiber-Optic Connections
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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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