Chapter 2 Alarm Troubleshooting

Alarm Procedures

Step 7 Change the West Line drop-down menu to the slot you recorded for the East Line in Step 3.

Step 8 Change the East Line drop-down menu to the slot you recorded for the West Line in Step 3.

Step 9 Click OK.

Step 10 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC to report

aservice-affecting problem (1-800-553-2447).

2.6.53EXCCOL

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

The Excess Collisions on the LAN (EXCCOL) alarm indicates that too many collisions are occurring between data packets on the network management LAN, and communications between the ONS 15327 and CTC might be affected. The network management LAN is the data network connecting the workstation running the CTC software to the XTC card. The problem causing the alarm is external to the ONS 15327.

Troubleshoot the network management LAN connected to the XTC card for excess collisions. You might need to contact the system administrator of the network management LAN to accomplish the following steps.

Procedure: Clear the EXCCOL Alarm

Step 1 Verify that the network device port connected to the XTC card has a flow rate set to 10 Mb, half-duplex.

Step 2 If the port has the correct flow rate and duplex setting, troubleshoot the network device connected to the XTC card and the network management LAN.

Step 3 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.54EXERCISE-RING-REQ

Not Alarmed (NA), Non-Service Affecting (NSA)

The Exercise Request on Ring (EXERCISE-RING-REQ) condition occurs when optical (traffic) cards in two-fiber BLSRs are tested using the EXERCISE RING command.

Note EXERCISE-RING-REQ is an informational condition. It does not require troubleshooting.

2.6.55 EXERCISE-SPAN-REQ

Not Alarmed (NA), Non-Service Affecting (NSA)

The Exercise Request on Span (EXERCISE-SPAN-REQ) condition occurs when optical (traffic) cards in a BLSR are tested using the EXERCISE SPAN command.

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

March 2004

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Cisco Systems ONS 15327 manual Exercise-Ring-Req, Exercise-Span-Req, Procedure Clear the Exccol 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.