Chapter 2 Alarm Troubleshooting

Alarm Procedures

Step 4 If two nodes have the same node ID number, complete the “Change a Node ID Number” procedure on page 2-126to change one node’s ID number so that each node ID is unique.

Note If the node names shown in the network view do not correlate with the node IDs, log into each node and click the Provisioning > BLSR tabs. The BLSR window shows the node ID of the login node.

Note Applying and removing a lock out on a span causes the ONS 15327 to generate a new K byte. The APSCNMIS alarm clears when the node receives a K byte containing the correct node ID.

Step 5 If the alarm does not clear, use the “Lock Out a BLSR Span” procedure on page 2-127to lock out the span.

Step 6 Complete the “Clear a BLSR Span Lock Out” procedure on page 2-127to clear the lock out.

Step 7 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC to report

aservice-affecting problem (1-800-553-2447).

2.6.11APSMM

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

An APS Mode Mismatch failure (APSMM) alarm occurs when there is a mismatch of the protection switching schemes at the two ends of the span. If one node is provisioned for bidirectional switching, the node at the other end of the span must also be provisioned for bidirectional switching. If one end is provisioned for bidirectional and the other is provisioned for unidirectional, an APSMM alarm occurs in the ONS node that is provisioned for bidirectional. The APSMM alarm occurs in a 1+1 configuration.

Procedure: Clear the APSMM Alarm

Step 1 For the reporting ONS 15327, display the node view and verify the protection scheme provisioning:

a.Click the Provisioning > Protection tabs.

b.Choose the 1+1 protection group configured for the OC-N cards.

The chosen protection group is the protection group optically connected (with DCC connectivity) to the far end.

Record whether the Bidirectional Switching check box is checked.

Step 2 Log into the far-end node and verify that the OC-N 1+1 protection group is provisioned.

Step 3 Verify that the Bidirectional Switching check box matches the checked or unchecked condition of the box recorded in Step 1. If not, change it to match.

Step 4 Click Apply.

Step 5 If the alarm 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

2-22

March 2004

 

 

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Cisco Systems ONS 15327 manual Procedure Clear the Apsmm Alarm, Click the Provisioning Protection 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.