Chapter 2 Alarm Troubleshooting

Alarm Procedures

Procedure: Procedure: Clear the SWTOTHIRD Condition

Step 1 To clear the condition, clear alarms related to failures of the primary source, such as a SYNCPRI alarm (see page 2-117)or a SYNCSEC alarm (see page 2-117).

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).

2.6.177 SYNC-FREQ

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

The Synchronization Reference Frequency Out Of Bounds (SYNC-FREQ) condition is reported against any reference that is out of the bounds for valid references. The login node fails the reference and chooses another internal or external reference to use.

Warning Invisible laser radiation might be emitted from the end of the unterminated fiber cable or connector. Do not stare into the beam directly with optical instruments. Viewing the laser output with certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100

mmmight pose an eye hazard. Use of controls or adjustments or performance of procedures other than those specified might result in hazardous radiation exposure.

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 SYNC-FREQ Condition

Step 1 Use an optical test set to verify the timing frequency of the line or BITS timing source and ensure that timing falls within the proper frequency.

For specific procedures to use the test set equipment, consult the manufacturer. For BITS, the proper timing frequency range is approximately –15 ppm to 15 ppm. For optical line timing, the proper frequency range is approximately –16 ppm to 16 ppm.

Step 2 If the reference source frequency is not outside of bounds, complete the “Physically Replace a Card” procedure on page 2-130for the XTC card.

Note When replacing a card with an identical type of card, no additional CTC provisioning is required.

Note The active XTC takes up to 30 minutes to transfer the system software to the newly installed XTC. Software transfer occurs in instances where different software versions exist on the two cards. During the transfer operation, the LEDs on the XTC flash fail and then the active/standby LED flashes. When the transfer completes, the XTC reboots and goes into standby mode after approximately three minutes.

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-116

March 2004

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Cisco Systems ONS 15327 manual Sync-Freq, Procedure Procedure Clear the Swtothird Condition, 116
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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.
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