Chapter 2 Alarm Troubleshooting

Alarm Procedures

Step 3 If the SYNC-FREQ alarm continues to report after replacing the XTC card, log onto

http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.178 SYNCPRI

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

A Loss of Timing on Primary Reference (SYNCPRI) alarm occurs when the ONS 15327 loses the primary timing source (reference 1). The ONS 15327 uses three ranking timing references. The timing references are typically two BITS-level or line-level sources and an internal reference. If SYNCPRI occurs, the ONS 15327 should switch to its secondary timing source (reference 2). Switching to the secondary timing source also triggers a SWTOSEC condition (see page 2-115).

Procedure: Clear the SYNCPRI Alarm

Step 1 In node view, click the Provisioning > Timing tabs.

Step 2 Verify the current configuration for the REF-1 of the NE Reference.

Step 3 If the primary reference is a BITS input, complete the “Clear the LOS (BITS) Alarm” procedure on page 2-82.

Step 4 If the primary reference clock is an incoming port on the ONS 15327, complete the “Clear the LOS (OC-N) Alarm” procedure on page 2-85.

Step 5 If the condition does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.179 SYNCSEC

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

A Loss of Timing on Secondary Reference (SYNCSEC) alarm occurs when the ONS 15327 loses the secondary timing source (reference 2). The ONS 15327 uses three ranked timing references. The timing references are typically two BITS-level or line-level sources and an internal reference. If SYNCSEC occurs, the ONS 15327 should switch to the third timing source (reference 3) to obtain valid timing for the ONS 15327. Switching to the third timing source also triggers a SWTOTHIRD condition (see page 2-115).

Procedure: Clear the SYNCSEC Alarm

 

Step 1

In node view, click the Provisioning > Timing tabs.

 

Step 2

Verify the current configuration of the REF-2 for the NE Reference.

 

Step 3

If the secondary reference is a BITS input, complete the “Clear the LOS (BITS) Alarm” procedure on

 

 

page 2-82.

 

Step 4

Verify that the BITS clock is operating properly.

 

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

 

 

 

 

 

March 2004

 

 

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Cisco Systems ONS 15327 manual Procedure Clear the Syncpri Alarm, Procedure Clear the Syncsec Alarm, 117
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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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