Chapter 2 Alarm Troubleshooting

Alarm Procedures

Step 2 Find the node ID by completing the “Identify a Ring ID or Node ID Number” procedure on page 2-125.

Step 3 Repeat Step 2 for all the nodes on the ring.

Step 4 If two nodes have an identical node ID number, complete the “Change a Node ID Number” procedure on page 2-126so that each node ID is unique.

Step 5 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC to report a service-affecting problem (1-800-553-2447).

2.6.136 PROTNA

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

The Protection Unit Not Available (PROTNA) alarm is caused by an OOS or failed protection card when an XTC that is provisioned as part of a protection group is not available. Unavailable protection can occur when a card is reset, but the alarm clears as soon as the card is back in service. The alarm clears if the device or facility is brought back in service.

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 PROTNA Alarm

Step 1 If the PROTNA alarm occurs and does not clear, and if the alarm is raised against an XTC, ensure that there is a redundant control card installed and provisioned in the chassis.

Step 2 If the alarm is raised against a traffic card, verify whether the ports have been taken out of service:

a.In CTC, double-click the reporting card to display the card view (if the card is not a cross-connect card).

b.Click the Provisioning tab.

c.Click the State of any in-service ports.

d.Choose OOS to take the ports out of service.

Step 3 Complete the “Reset a Traffic Card in CTC” procedure on page 2-129for the reporting card:

While the card resets, the FAIL LED on the physical card blinks and turns off.

While the card resets, the white LED with the letters “LDG” appears on the reset card in CTC.

Step 4 Verify that the reset is complete and error-free:

No new alarms appear in the Alarms window in CTC.

If you are looking at the physical ONS 15327, the ACT/STBY LED is illuminated.

If you are looking at the node view of the ONS 15327, an amber LED depiction with “Sby” has replaced the white “LDG” depiction on the card in CTC.

Step 5 If the alarm does not clear, complete the “Remove and Reinsert (Reseat) a Card” procedure on page 2-130for the reporting card.

Step 6 If you reinsert a high-speed card, verify the following LED behavior:

The FAIL LED blinks for approximately 30 seconds.

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

March 2004

2-97

 

 

 

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Cisco Systems ONS 15327 manual Procedure Clear the Protna 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.