Chapter 2 Alarm Troubleshooting

Alarm Procedures

Note EXERCISE-SPAN-REQ is an informational condition. It does not require troubleshooting.

2.6.56 EXT

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

A Failure Detected External to the NE (EXT) alarm occurs because an environmental alarm is present, for example, a door is open or flooding has occurred.

Procedure: Clear the EXT Alarm

Step 1 In node view, click the Maintenance tab to gather further information about the EXT alarm.

Step 2 Perform your standard operating procedure for the environmental condition.

Step 3 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.57 EXTRA-TRAF-PREEMPT

Major (MJ), Service Affecting (SA)

An Extra Traffic Preempted (EXTRA-TRAF-PREEMPT) alarm occurs on OC-N cards in two-fiber BLSRs because low-priority traffic directed to the protect system has been preempted by a working system protection switch.

Procedure: Clear the EXTRA-TRAF-PREEMPT Alarm

Step 1 Verify that the protection switch has occurred by checking the Conditions tab.

Step 2 If a ring switch has occurred, clear the alarm on the working system by following the appropriate alarm procedure in this chapter.

Step 3 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.58FAILTOSW

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

The Failure to Switch to Protection (FAILTOSW) condition occurs when a working electrical or optical (traffic) card cannot switch to the protect card in a protection group, because another working electrical or optical card with a higher-priority alarm has switched to the protect card.

Cisco ONS 15327 Troubleshooting Guide, R3.4

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March 2004

 

 

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Cisco Systems ONS 15327 manual 56 EXT, Extra-Traf-Preempt, Failtosw, Procedure Clear the EXT Alarm

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.