Chapter 1 General Troubleshooting

Fiber and Cabling

1.8.2 Faulty Fiber-Optic Connections

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

Table 1-36describes the potential cause(s) of the symptom and the solution(s).

Table 1-36 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 1-72.

 

 

Faulty Category-5

Faulty Category-5 cables can be the source of SONET alarms and signal

cables.

errors. See the “1.8.2.1 Crimp Replacement LAN Cables” section on

 

page 1-74.

 

 

Faulty gigabit interface

Faulty gigabit interface converters can be the source of SONET alarms and

connectors.

signal errors. See the “1.8.2.2 Replace Faulty SFP Connectors” section on

 

page 1-76.

 

 

Warning Follow all directions and warning labels when working with optical fibers. To prevent eye damage, never look directly into a fiber or connector.

Warning Class IIIb laser.

Warning Danger, laser radiation when open. The OC-192 laser is off when the safety key is off (labeled 0). The laser is on when the card is booted and the safety key is in the on position (labeled 1). The port does not have to be in service for the laser to be on.

Warning Avoid direct exposure to the beam. Invisible radiation is emitted from the aperture at the end of the fiber optic cable when connected, but not terminated.

Procedure: Verify Fiber-Optic Connections

Step 1 Ensure that a single-mode fiber connects to the ONS 15327 card.

SM or SM Fiber should be printed on the fiber span cable. ONS 15327 cards 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.

Cisco ONS 15327 Troubleshooting Guide, R3.4

1-72

April 2003

 

 

Page 98
Image 98
Cisco Systems ONS 15327 manual Faulty Fiber-Optic Connections, Procedure Verify Fiber-Optic Connections

ONS 15327 specifications

Cisco Systems ONS 15327 is a high-performance optical networking solution tailored for service providers and enterprises looking to enhance their optical communication infrastructure. This versatile platform is recognized for its robust performance, scalability, and flexibility, making it suitable for a wide array of applications ranging from broadband access to metropolitan area networking.

One of the standout features of the ONS 15327 is its ability to handle multiple data types over a single platform. It supports a rich array of protocols, including Ethernet and SONET/SDH, allowing service providers to deliver a diverse portfolio of services to their customers. This multiservice capability simplifies the network architecture, reducing operational complexity and costs.

The ONS 15327 is designed with a modular architecture, which enables operators to customize and scale their network as demand grows. It supports a variety of card options for different media types, wavelengths, and capacity requirements. This modularity not only facilitates straightforward upgrades but also allows for efficient network management.

In terms of technology, the ONS 15327 leverages dense wavelength division multiplexing (DWDM) capabilities to maximize the utilization of available fiber bandwidth. This allows for an impressive increase in transmission capacity without the need for additional fiber installations, making it a cost-effective solution for expanding networks.

Another significant characteristic of the Cisco ONS 15327 is its advanced performance monitoring and management features. Built-in diagnostic tools provide real-time visibility into network performance, enabling prompt identification and troubleshooting of potential issues. This proactive approach to network management enhances service reliability and customer satisfaction.

Security is also paramount in the ONS 15327. The platform integrates various security features and protocols to protect the data traversing the network, ensuring compliance with industry standards and safeguarding sensitive information.

Furthermore, the equipment is designed for easy integration into existing infrastructures. Its compatibility with Cisco’s broader networking solutions allows for seamless interconnection with routers, switches, and other devices, facilitating comprehensive network solutions.

In conclusion, Cisco Systems ONS 15327 stands out as a powerful optical networking platform that combines versatility, scalability, and advanced management features. Its ability to support various protocols and harness optical technologies makes it an essential tool for organizations aiming to optimize their telecommunications infrastructure while minimizing costs and complexity.