Chapter 2 Alarm Troubleshooting

Alarm Procedures

2.6.186 UNEQ-P

•Critical (CR), Service Affecting (SA)

An SLMF UNEQ Path alarm occurs when the path does not have a valid sender. The UNEQ-P indicator is carried in the C2 signal path byte in the SONET overhead. The source of the problem is the node that is transmitting the signal into the node reporting the UNEQ-P.

The alarm might result from an incomplete circuit or an empty VT tunnel. UNEQ-P occurs in the node that terminates a path.

Warning Invisible laser radiation might be emitted from the end of the unterminated fiber cable or connector. Do not stare into the beam directly with optical instruments. Viewing the laser output with certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100

mmmight pose an eye hazard. Use of controls or adjustments or performance of procedures other than those specified might result in hazardous radiation exposure.

Caution Deleting a circuit affects traffic.

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.

Note If you have created a new circuit but it has no signal, an UNEQ-P alarm is reported on the OC-N cards and an AIS-P condition (see page 2-17)is reported on the terminating cards. These alarms clear when the circuit carries a signal.

Procedure: Clear the UNEQ-P Alarm

Step 1 In node view, click View > Go to Network View.

Step 2 Right-click the alarm to display the Select Affected Circuits dialog box.

Step 3 Click the Select Affected Circuits dialog box.

Step 4 When the affected circuits appear, look in the Type column for VTT, which indicates a VT tunnel circuit. A VT tunnel with no VTs assigned might be the cause of an UNEQ-P alarm.

Step 5 If the Type column does not contain VTT there are no VT tunnels connected with the alarm. Go to Step 7.

Step 6 If the Type column does contain VTT, attempt to delete these row(s). The node view does not allow you to delete a valid VT tunnel or one with a valid VT circuit inside:

a.Click the VT tunnel circuit row to highlight it. Complete the “Delete a Circuit” procedure on page 2-128.

b.If an error message dialog box appears, the VT tunnel is valid and not the cause of the alarm.

c.If any other columns contain VTT, repeat Step 6.

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-122

March 2004

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Cisco Systems ONS 15327 manual Uneq-P, Procedure Clear the UNEQ-P Alarm, Click the Select Affected Circuits dialog box, 122
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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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