Chapter 1 General Troubleshooting

1.3.6 Perform a Facility Loopback on a Destination-Node OC-N Port

e.Click Apply.

f.Click Yes in the confirmation dialog box.

Step 4 Clear the terminal loopback circuit:

a.Click the Circuits tab.

b.Choose the loopback circuit being tested.

c.Click Delete.

d.Click Yes in the Delete Circuits dialog box.

Step 5 If the test set indicates a faulty circuit, the problem might be a faulty controller card (15310-CL-CTX or CTX2500). Continue with the “1.3.6 Perform a Facility Loopback on a Destination-NodeOC-N Port” procedure on page 1-22.

1.3.6 Perform a Facility Loopback on a Destination-Node OC-N Port

The final facility loopback test is performed on the source OC-N port in the destination node. Completing a successful facility loopback on this port isolates the OC-N port as a possible failure point.

Caution Performing a loopback on an in-service circuit is service-affecting.

Create the Facility Loopback on a Destination-Node OC-N Port

Step 1 Connect an optical test set to the port you are testing:

a.If you just completed the “1.3.5 Perform a Terminal Loopback on an Intermediate-NodeOC-N Port” procedure on page 1-20, leave the optical test set connected to the OC-N port in the source node.

b.If you are starting the current procedure without the optical test set connected to the OC-N port, use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are testing.

c.Adjust the test set accordingly.

Step 2 Use CTC to set up the facility loopback circuit on the port being tested:

a.Click the Circuits tab and click Create.

b.Give the circuit an easily identifiable name, such as OCN1toOCN5.

c.Set circuit Type and Size to the normal preferences, such as STS and STS1.

d.Leave the Bidirectional check box checked and click Next.

e.In the Circuit Source dialog box, fill in the source Node, Slot, Port, and Type where the test set is connected and click Next.

f.In the Circuit Destination dialog box, fill in the destination Node, Slot, Port, and Type (the OC-N port in the destination node) and click Finish.

Step 3 Confirm that the newly created circuit appears on the Circuits tab list as a two-way circuit.

Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0

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Cisco Systems ONS 15310-CL, ONS 15310-MA manual Perform a Facility Loopback on a Destination-Node OC-N Port
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ONS 15310-CL, ONS 15310-MA specifications

Cisco Systems has long been a leader in networking and telecommunications technology, and among its impressive lineup of products, the Cisco ONS 15310 series stands out as an essential solution for optical networking. This series includes models such as the ONS 15310-MA, ONS 15310-CL, and ONS 15310-CA, each designed to meet the diverse needs of service providers and enterprises seeking to enhance their optical transport networks.

The Cisco ONS 15310-MA is an advanced multi-service platform designed for metropolitan area networks. It facilitates the seamless transport of data, voice, and video over optical networks. One of its main features is its ability to support a variety of interfaces, including Ethernet, SONET/SDH, and Wavelength Division Multiplexing (WDM), allowing users to integrate multiple services into a single platform. Additionally, the ONS 15310-MA supports advanced traffic management and Quality of Service (QoS) features to prioritize critical applications and ensure consistent performance.

The ONS 15310-CL variant is tailored for more specific applications, providing enhanced capabilities aimed at delivering carrier-grade services. It features a robust architecture that accommodates high-capacity traffic without compromising reliability. This model emphasizes low power consumption and a compact design, making it suitable for deployment in space-constrained environments. The ONS 15310-CL also supports a wide range of optical interfaces, making it highly flexible for various network configurations.

In terms of technologies, the Cisco ONS 15310 series leverages Optical Transport Network (OTN) capabilities, providing high efficiency and greater bandwidth utilization. OTN technology enables efficient error correction and adds resilience to the network through its built-in protection mechanisms. Furthermore, the series supports seamless integration with existing IP/MPLS networks, creating a cohesive infrastructure as organizations evolve their networking requirements.

One of the defining characteristics of the ONS 15310 series is its focus on scalability. Network operators can start with a modest deployment and gradually expand capacity as demand grows. This adaptability is complemented by Cisco's comprehensive management and monitoring tools, providing operators with real-time insights into network performance and facilitating proactive management.

In conclusion, the Cisco ONS 15310-MA and ONS 15310-CL models represent sophisticated solutions for modern optical networks. With their versatile features, advanced technologies, and robust design, they empower service providers and enterprises to build resilient, high-capacity networks that meet the demands of today’s data-driven world.
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