Chapter 1 General Troubleshooting

Identify Points of Failure on a DS-N Circuit Path

Step 6 Verify that the circuits connect to the correct slots. For example, verify that source node/Slot 1 OC-N card (east slot) is connected to destination node/Slot 2(west slot). If two east slots or two west slots are connected, the circuit does not work. Except for the distinct slots, all other circuit information, such as ports, should be identical.

Step 7 Proceed to the “Test the Hairpin Circuit” procedure on page 1-16.

Procedure: Test the Hairpin Circuit

Step 1 If the test set is not already sending traffic, send test-set traffic on the loopback circuit.

Step 2 Examine the test traffic received by the test set. Look for errors or any other signal information indicated by the test set.

Step 3 If the test set indicates a good circuit, no further testing is necessary with the hairpin circuit:

a.Clear the hairpin circuit:

Click the Circuits tab.

Choose the hairpin circuit being tested.

Click the Delete button.

Click the Yes button in the Delete Circuits dialog box.

Confirm that the hairpin circuit is deleted from the Circuits tab list.

b.Proceed to the “Perform a Facility Loopback on a Destination XTC Card” procedure on page 1-18.

Step 4 If the test set indicates a faulty circuit, the problem might exist with the destination XTC card.

Step 5 Proceed to the “Test the Alternate Destination XTC Card” procedure on page 1-16.

Procedure: Test the Alternate Destination XTC Card

Step 1 Perform a software reset on the active XTC card.

Caution XTC side switches are service-affecting. Any live traffic on any card in the node endures a hit of up to 50 ms.

Note After the active XTC goes into standby, the original standby slot becomes active. This causes the ACT/STBY LED to become green on the former standby card.

Step 2 Resend test traffic on the loopback circuit. The test traffic routes through the alternate XTC card.

Step 3 If the test set indicates a faulty circuit, assume that the XTC card is not causing the problem:

a.Clear the hairpin circuit:

Click the Circuits tab.

Choose the hairpin circuit being tested.

Cisco ONS 15327 Troubleshooting Guide, R3.4

1-16

April 2003

 

 

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Cisco Systems ONS 15327 manual Procedure Test the Hairpin Circuit, Procedure Test the Alternate Destination XTC Card

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.