Chapter 2 Alarm Troubleshooting

Alarm Procedures

e.Verify that the line type of the reporting port matches the line type of the signal source (DS4 and DS4, unframed and unframed, or ESF and ESF). If the signal source line type does not match the reporting port, click the Line Type cell to reveal a drop-down menu and choose the matching type.

f.Verify that the reporting Line Coding matches the signal source’s line coding (AMI and AMI or B8ZS and B8ZS). If the signal source line coding does not match the reporting port, click the Line Coding cell and choose the right type from the drop-down menu.

g.If the signal source line coding does not match the reporting port, click the Line Coding column and choose the appropriate type from the drop-down menu.

h.Click Apply.

Note On the DS-1 Line tab, the B8ZS coding field is normally paired with ESF in the Line Type field. AMI coding is normally paired with D4 in the Line Type field.

Step 2 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).

2.6.106 LOF (DS-3)

Critical (CR), Service Affecting (SA)

The DS-3 LOF alarm indicates that the receiving ONS 15327 has lost frame delineation in the incoming DS-3 data stream. The framing of the transmitting equipment might be set to a format that differs from the receiving ONS 15327. On XTC-28-3 cards, the alarm occurs only on DS-1 lines with the provisionable framing format set to SF (D4) and not on cards with the provisionable framing format set to unframed.

Procedure: Clear the LOF (DS-3) Alarm

Step 1 Change the line type of the non-ONS equipment attached to the reporting card to D4:

a.Display the card view of the reporting card.

b.Click the Provisioning > DS1 > Line tabs.

c.Verify that the line type of the reporting port matches the line type of the signal source.

d.If the signal source line type does not match the reporting port, click Line Type and choose D4 from the drop-down menu.

e.Click Apply.

Step 2 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).

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

March 2004

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Cisco Systems ONS 15327 manual Procedure Clear the LOF DS-3 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.