Chapter 1 General Troubleshooting

Identify Points of Failure on a DS-N Circuit Path

Step 4 If the test set indicates a good circuit, the problem might be a defective card.

Step 5 To confirm a defective original XTC card, proceed to the “Retest the Original Source XTC Card” procedure on page 1-11.

Procedure: Retest the Original Source XTC Card

Step 1 Perform a side switch of the XTC cards to make the original card the active card.

Step 2 Resend test-set traffic on the loopback circuit.

Step 3 If the test set indicates a faulty circuit on the original card, the problem is probably the defective card:

a.Return the defective card to Cisco through the returned materials authorization (RMA) process. Call the Cisco TAC.

b.Replace the defective XTC card. See Chapter 3, “Replace Hardware” for details.

c.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.

d.Proceed to Step 5.

Step 4 If the test set indicates a good circuit, the original XTC card might have had a temporary problem that is cleared by the side switch.

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.

Step 5 Proceed to the “1.2.3 Perform a Terminal Loopback on a Destination XTC Port” section on page 1-11.

1.2.3 Perform a Terminal Loopback on a Destination XTC Port

The terminal loopback test is performed on the node destination port in the circuit; in this example, the XTC port in the destination node. First, create a bidirectional circuit that starts on the source node DS-N port and terminates on the destination node DS-N port. Then proceed with the terminal loopback test.

Completing a successful terminal loopback to a destination node XTC port verifies that the circuit is good up to the destination XTC. Figure 1-9 on page 1-12shows an example of a terminal loopback on a destination node XTC port.

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

April 2003

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Cisco Systems ONS 15327 manual Perform a Terminal Loopback on a Destination XTC Port
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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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