Chapter 2 Alarm Troubleshooting

Alarm Procedures

An SF Line (SF-L) condition is similar to an SF condition (see page 2-106)but it applies to the line layer of the signal.

Procedure: Clear the SF-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).

2.6.153 SF-P

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

An SF Path (SF-P) condition is similar to an SF condition (see page 2-106), 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.

For UPSR circuits, the BER threshold on the ONS 15327 is user provisionable and has a range for SF from 10–5to 10–3. For BLSR 1+1 or unprotected circuits, the BER threshold value is not user provisionable and the error rate is hard-coded to 10–3.

For UPSR, SF-P causes a switch from the working card to the protect card at the path (STS) level. For BLSR 1+1 or unprotected circuits, SF-P does not cause switching.

The BER increase that causes the alarm is sometimes caused by a physical fiber problem such as a poor fiber connection, a bend in the fiber that exceeds the permitted bend radius, or a bad fiber splice.

Procedure: Clear the SF-P 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).

2.6.154 SFTWDOWN

Minor (MN), Non-Service Affecting (NSA)

A Software Download in Progress (SFTWDOWN) alarm occurs when the XTC is downloading or transferring software.

No action is necessary. Wait for the transfer or the software download to complete. If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

Caution It can take up to 30 minutes for software to be updated on a standby XTC card.

 

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

 

 

 

 

 

March 2004

 

 

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Cisco Systems ONS 15327 manual Sf-P, Sftwdown, Procedure Clear the SF-L Condition, Procedure Clear the SF-P Condition, 107

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.