Chapter 2 Alarm Troubleshooting

Alarm Procedures

Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15327. Plug the wristband cable into the ESD jack located between the top high-speed and XTC slots.

Procedure: Clear the SD Condition

Step 1 Complete the “Verify BER Threshold Level” procedure on page 2-129.

Step 2 If the BER threshold is correct and at the expected level, use an optical test set to measure the power level of the line to ensure the level is within guidelines.

For specific procedures to use the test set equipment, consult the manufacturer.

Step 3 If the optical power level is correct, verify that optical receive levels are within the acceptable range.

Step 4 If receive levels are correct, clean the fibers at both ends according to site practice. If no site practice exists, complete the procedure in the Cisco ONS 15327 Procedure Guide.

Step 5 If the alarm does not clear, verify that single-mode fiber is used.

Step 6 If the fiber is the correct type, verify that a single-mode laser is used at the far-end node.

Step 7 If the problem does not clear, the transmitter at the other end of the optical line might be failing and require replacement.

Step 8 If the condition does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.149 SD-L

•Not Alarmed (NA), Non-Service Affecting (NSA)

An SD Line condition is similar to an SD condition (see page 2-104). It applies to the line level of the SONET signal.

Procedure: Clear the SD-L Condition

Step 1 Complete the “Clear the SD Condition” procedure on page 2-105.

Step 2 If the condition does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.150 SD-P

•Not Alarmed (NA), Non-Service Affecting (NSA)

An SD Path (SD-P) condition is similar to an SD condition (see page 2-104)but it applies to the path (STS) layer of the SONET overhead. A path or ST-level SD alarm travels on the B3 byte of the SONET overhead.

 

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

 

 

 

 

 

March 2004

 

 

2-105

 

 

 

 

 

Page 210 Page 212
Page 211
Image 211
Cisco Systems ONS 15327 manual Sd-L, Sd-P, Procedure Clear the SD Condition, Procedure Clear the SD-L Condition, 105
Page 210 Page 212

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.
Top Page Image Contents