Chapter 1 General Troubleshooting

Fiber and Cabling

1.7.10 Blinking STAT LED after Installing a Card

Symptom After installing a card, the STAT LED blinks continuously for more than 60 seconds.

Table 1-34describes the potential cause of the symptom and the solution.

Table 1-34 Blinking STAT LED on Installed Card

Possible Problem

Solution

 

 

The card cannot boot

The blinking STAT LED indicates that POST diagnostics are being

because it failed the

performed. If the LED continues to blink more than 60 seconds, the card has

Power On Shelf Test

failed the POST diagnostics test and has failed to boot.

(POST) diagnostics.

If the card has truly failed, an EQPT-BOOT alarm is raised against the slot

 

 

number with an “Equipment Fails To Boot” description. Check the alarm tab

 

for this alarm to appear for the slot where the card is installed.

 

To attempt recovery, remove and reinstall the card and observe the card boot

 

process. If the card fails to boot, replace the card.

 

 

1.8 Fiber and Cabling

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

1.8.1 Bit Errors Appear for a Traffic Card

Symptom A traffic card has multiple bit errors.

Table 1-35describes the potential cause of the symptom and the solution.

Table 1-35 Bit Errors Appear for a Line Card

Possible Problem

Solution

 

 

Faulty cabling or low

Bit errors on line (traffic) cards usually originate from cabling problems or

optical-line levels.

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

 

problems, especially if PJ (pointer justification) errors are reported. Moving

 

cards into different error-free slots isolates the cause. Use a test set whenever

 

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

 

external equipment connecting to the ONS 15327. Troubleshoot cabling

 

problems using the “1.1 Network Troubleshooting Tests” section on

 

page 1-2. Troubleshoot low optical levels using the “1.8.2 Faulty

 

Fiber-Optic Connections” section on page 1-72.

 

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

April 2003

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Cisco Systems ONS 15327 Fiber and Cabling, Blinking Stat LED after Installing a Card, Bit Errors Appear for a Traffic Card

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.