Chapter 2 Alarm Troubleshooting

Alarm Procedures

Note When the CARLOSS and the TPTFAIL alarms are reported, the reason for the condition might be the G1000-2's end-to-end link integrity feature taking action on a remote failure indicated by the TPTFAIL alarm.

Step 9 If the TPTFAIL alarm was not reported, verify whether a terminal loopback has been provisioned on the port:

a.In node view, click the card to go to card view.

b.Click the Conditions tab and the Retrieve Conditions button.

c.If LPBKTERMINAL is listed for the port, a loopback is provisioned. Go to Step 10. If in service (IS) is listed, go to Step 11.

Step 10 If a loopback was provisioned, complete the “Clear a Loopback” procedure on page 2-128.

On the G1000-2 card, provisioning a terminal loopback causes the transmit laser to turn off. If an attached Ethernet device detects the loopback as a loss of carrier, the attached Ethernet device shuts off the transmit laser to the G1000-2 card. Terminating the transmit laser could raise the CARLOSS alarm because the loopbacked G1000-2 port detects the termination.

If the does not have a LPBKTERMINAL condition, continue to Step 11.

Step 11 If a CARLOSS alarm repeatedly appears and clears, the reappearing alarm might be a result of mismatched STS circuit sizes in the setup of the manual cross-connect. Perform the following steps if the Ethernet circuit is part of a manual cross-connect:

Note An Ethernet manual cross-connect is used when another vendors’ equipment sits between ONS 15327s, and the OSI/TARP-based equipment does not allow tunneling of the ONS 15327 TCP/IP-based DCC. To circumvent a lack of continuous DCC, the Ethernet circuit is manually cross connected to an STS channel riding through the non-ONS network.

a.Right-click anywhere in the row of the CARLOSS alarm.

b.Right-click or left-click the Select Affected Circuits dialog box.

c.Record the information in the Type and Size columns of the highlighted circuit.

d.Examine the layout of your network and determine which ONS 15327 and card host the Ethernet circuit at the other end of the Ethernet manual cross-connect:

Log into the ONS 15327 at the other end of the Ethernet manual cross-connect.

Double-click the Ethernet (traffic) card that is part of the Ethernet manual cross-connect.

Click the Circuits tab.

Record the information in the Type and Size columns of the circuit that is part of the Ethernet manual cross-connect. The cross-connect circuit connects the Ethernet (traffic) card to an OC-N card at the same node.

e.Determine whether the two Ethernet circuits on each side of the Ethernet manual cross-connect have the same circuit size from the circuit size information you recorded.

f.If one of the circuit sizes is incorrect, complete the “Delete a Circuit” procedure on page 2-128and reconfigure the circuit with the correct circuit size. Refer to the Cisco ONS 15327 Procedure Guide for detailed procedures to create circuits.

Step 12 If a valid Ethernet signal is present, complete the “Remove and Reinsert (Reseat) a Card” procedure on page 2-130.

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

March 2004

2-35

 

 

 

Page 141
Image 141
Cisco Systems ONS 15327 manual Click the Conditions tab and the Retrieve Conditions button

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.