Chapter 2 Alarm Troubleshooting

Alarm Procedures

2.6.61FAILTOSWS

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

The Failure to Switch to Protection Span (FAILTOSWS) condition signals an APS span switch failure. FAILTOSWS clears when one of the following actions occur: a higher priority event such as an external switch command occurs; the next span switch succeeds; or an SD condition (see page 2-104)or SF condition (see page 2-106)causing an APS switch clears.

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 FAILTOSWS Condition

Step 1 Perform the EXERCISE SPAN command on the reporting card:

a.Click the Maintenance > BLSR tabs.

b.Determine whether the card you would like to exercise is the west card or the east card.

c.Click the row of the affected span under the East Switch or West Switch column.

d.Select Exercise Span in the drop-down menu.

Step 2 If the condition does not clear, in node view, click View > Go to Network View.

Step 3 Look for alarms on OC-N cards that make up the ring or span and troubleshoot these alarms.

Step 4 If clearing other alarms does not clear the FAILTOSWS condition, log into the near-end node and click the Maintenance > BLSR tabs.

Step 5 Record the OC-N cards listed under West Line and East Line. Ensure that these OC-N cards are active and in service (IS):

a.Confirm that the OC-N card shows a green LED in CTC or on the physical card. A green LED indicates an active card. An amber LED indicates a standby card.

b.To determine whether the OC-N port is in service, double-click the card in CTC to display the card view.

c.Click the Provisioning > Line tabs.

d.Verify that the State column lists the port as in service (IS).

e.If the State column lists the port as OOS, click the column and choose IS. Click Apply.

Step 6 If the OC-N cards are active and in service, verify fiber continuity to the ports on the recorded cards.

Step 7 If fiber continuity to the ports is correct, verify that the correct port is in service:

a.Confirm that the OC-N card shows a green LED in CTC or on the physical card. A green LED indicates an active card. An amber LED indicates a standby card.

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-58

March 2004

 

 

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Cisco Systems ONS 15327 manual Procedure Clear the Failtosws Condition
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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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