Chapter 2 Alarm Troubleshooting

Alarm Procedures

Step 5 If the circuit deletion and recreation does not clear the alarm, verify the far-end OC-N card that provides STS payload to the XTC card.

Step 6 If the alarm does not clear, verify the cross-connect between the OC-N card and the XTC card.

Step 7 If the alarm does not clear, clean the far-end optical fiber according to site practice. If no site practice exists, complete the procedure in the Cisco ONS 15327 Procedure Guide.

Step 8 If the alarm does not clear, complete the “Physically Replace a Card” procedure on page 2-130for the reporting traffic card.

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

Step 9 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).

2.6.134 PLM-V

Minor (MN), Service Affecting (SA)

A Payload Label Mismatch VT Layer (PLM-V) alarm indicates that the content of the V5 byte in the SONET overhead is inconsistent or invalid. PLM-V occurs when ONS nodes interoperate with equipment that performs bit-synchronous mapping for DS-1. ONS nodes use asynchronous mapping.

Procedure: Clear the PLM-V Alarm

Step 1 Verify that your signal source matches the signal allowed by the traffic card. For example, the traffic card does not allow VT6 or VT9 mapping.

Step 2 If the signal source matches the card, verify that the SONET VT path originator is sending the correct VT label value. You can find the SONET VT path originator using circuit provisioning steps.

Step 3 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).

2.6.135 PRC-DUPID

Major (MJ), Service Affecting (SA) for Ring

Major (MJ), Non-Service Affecting (NSA) for NE

The Procedural Error Duplicate Node ID (PRC-DUPID) alarm indicates that two identical node IDs exist in the same ring. The ONS 15327 requires each node in the ring to have a unique node ID.

Procedure: Clear the PRC-DUPID Alarm

Step 1 Log into a node on the ring.

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-96

March 2004

 

 

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Cisco Systems ONS 15327 manual Plm-V, Prc-Dupid, Procedure Clear the PLM-V Alarm, Procedure Clear the PRC-DUPID 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.