Chapter 1 General Troubleshooting

1.3.5 Perform a Terminal Loopback on an Intermediate-Node OC-N Port

Step 2 Use CTC to set up the terminal 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 OCN1toOCN4.

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 intermediate node) and click Finish.

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

Note It is normal for a 2.7.162 LPBKTERMINAL (OCN) condition to appear during a loopback setup. The condition clears when you remove the loopback.

Step 4 Create the terminal loopback on the destination port being tested:

a.Go to the node view of the intermediate node:

•From the View menu, choose Go To Other Node.

•Choose the node from the drop-down list in the Select Node dialog box and click OK.

b.In node view, double-click the controller card (15310-CL-CTX or CTX2500) with the OC-N port requiring a loopback.

c.Click the Maintenance > Optical > Loopback > Port tabs.

d.Select OOS,MT from the Admin State column.

e.Select Terminal from the Loopback Type column.

f.Click Apply.

g.Click Yes in the confirmation dialog box.

Step 5 Continue with the “Test the Terminal Loopback Circuit” procedure on page 1-21.

Test the Terminal Loopback Circuit

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

Step 2 Examine the test traffic being received by the test set. Look for errors or any other signal information that the test set is capable of indicating.

If the test set indicates a good circuit, no further testing is necessary on the loopback circuit. Step 3 Clear the terminal loopback:

a.Double-click the card with the loopback.

b.Click the Maintenance > Optical > Loopback > Port tabs.

c.Select None from the Loopback Type column for the port being tested.

d.Select the appropriate state (IS,AINS; OOS,DSBLD; or OOS,MT) in the Admin State column for the port being tested.

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

1-21

Page 54 Page 56
Page 55
Image 55
Cisco Systems ONS 15310-MA, ONS 15310-CL manual Test the Terminal Loopback Circuit
Page 54 Page 56

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.
Top Page Image Contents