Chapter 1 General Troubleshooting

1.11.2 Faulty Fiber-Optic Connections

Warning Class 1 laser product. Statement 1008

Warning Laser radiation presents an invisible hazard, so personnel should avoid exposure to the laser beam. Personnel must be qualified in laser safety procedures and must use proper eye protection before working on this equipment. Statement 300

Verify Fiber-Optic Connections

Step 1 Ensure that a single-mode fiber connects to the ONS 15310-CL or ONS 15310-MA Small form-factor Pluggable (SFP).

SM or SM Fiber should be printed on the fiber span cable. ONS 15310-CL and ONS 15310-MA ports do not use multimode fiber.

Step 2 Ensure that the connector keys on the SC fiber connector are properly aligned and locked. Step 3 Check that the single-mode fiber power level is within the specified range:

a.Remove the Rx end of the suspect fiber.

b.Connect the receive end of the suspect fiber to a fiber-optic power meter, such as a GN Nettest LP-5000.

c.Determine the power level of fiber with the fiber-optic power meter.

d.Verify that the power meter is set to the appropriate wavelength for the optical port being tested (either 1310 nm or 1550 nm).

e.Verify that the power level falls within the range specified for the card; refer to the Cisco ONS 15310-CL and Cisco ONS 1310-MA Reference Manual for information.

Step 4 If the power level falls below the specified range:

a.Clean or replace the fiber patchcords. Clean the fiber according to site practice or, if none exists, follow the procedure in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide. If possible, do this for the OC-N port you are working on and the far-end ONS 15310-CL or ONS 15310-MA.

b.Clean the optical connectors on the port. Clean the connectors according to site practice or, if none exists, follow the procedure in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide. If possible, do this for the card you are working on and the far-end node.

c.If the power level still falls below the specified range with the replacement fibers and replacement card, check for one of these three factors that attenuate the power level and affect link loss (LL):

•Excessive fiber distance—Single-mode fiber attenuates at approximately 0.5 dB/km.

•Excessive number or fiber connectors—Connectors take approximately 0.5 dB each.

•Excessive number of fiber splices—Splices take approximately 0.5 dB each.

Note These are typical attenuation values. Refer to the specific product documentation for the actual values or use an optical time domain reflectometer (OTDR) to establish precise link loss and budget requirements.

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 Verify 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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