Chapter 2 Alarm Troubleshooting

Alarm Procedures

Procedure: Clear the LOF (BITS) Alarm

Step 1 Verify that the framing and line coding match between the BITS input and the XTC:

a.In node view or card view, note the slot and port reporting the alarm.

b.Find the framing and coding formats of the external BITS timing source. The formats should be in the user documentation for the external BITS timing source or on the timing source itself.

c.Click the Provisioning > Timing tabs to display the General Timing window.

d.Verify that the Coding field matches the coding of the BITS timing source (B8ZS or AMI).

e.If the coding does not match, click Coding and choose the appropriate coding from the drop-down menu.

f.Verify that the Framing field matches the framing of the BITS timing source, either SF (D4) or ESF.

g.If the framing does not match, click Framing and choose the appropriate framing from the drop-down menu.

Note On the timing subtab, the B8ZS coding field is normally paired with ESF in the Framing field, and the AMI coding field is normally paired with SF (D4) in the Framing field.

Step 2 If the alarm does not clear when the line framing and line coding match between the BITS input and the XTC, complete the “Physically Replace a Card” procedure on page 2-130for the XTC card.

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

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).

2.6.105 LOF (DS-1)

•Major (MJ), Service Affecting (SA)

The DS-1 LOF alarm indicates that the receiving ONS 15327 has lost frame delineation in an incoming DS-1 data stream.

Procedure: Clear the LOF (DS-1) Alarm

Step 1 Verify that the line framing and line coding match between the DS-1 port and the signal source:

a.In CTC, note the slot and port reporting the alarm.

b.Find the coding and framing formats of the signal source for the card reporting the alarm. You might need to contact your network administrator for the format information.

c.Display the card view of the reporting XTC.

d.Click the Provisioning > DS1 > Line tabs.

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-78

March 2004

 

 

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Cisco Systems ONS 15327 manual Procedure Clear the LOF Bits Alarm, Procedure Clear the LOF DS-1 Alarm
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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.
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