Chapter 2 Alarm Troubleshooting

Alarm Procedures

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:

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.

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 8 If the correct port is in service, use an optical test set to verify that a valid signal exists on the line.

For specific procedures to use the test set equipment, consult the manufacturer. Test the line as close to the receiving card as possible.

Caution Using an optical test set disrupts service on the optical (traffic) card. It might be necessary to externally switch traffic carrying circuits over to a protection path.

Step 9 If the signal is valid, clean the fiber according to site practice. If no site practice exists, complete the procedure in the Cisco ONS 15327 Procedure Guide.

Step 10 If cleaning the fiber does not clear the condition, verify that the power level of the optical signal is within the OC-N card’s receiver specifications. The “Optical Card Transmit and Receive Levels” section on page 1-77lists these specifications.

Step 11 Repeat Steps 610for any other ports on the card.

Step 12 If the optical power level for all OC-N cards is within specifications, complete the “Physically Replace a Card” procedure on page 2-130for the protect standby OC-N card.

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

Step 13 If the condition does not clear after you replace the BLSR cards on the node one by one, follow Steps 4 through 12 for each of the nodes in the ring.

Step 14 If the condition does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

March 2004

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Cisco Systems ONS 15327 manual Click the Provisioning Line tabs

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.