Chapter 2 Alarm Troubleshooting

Alarm Procedures

Note When replacing a card with an identical type of card, no additional CTC provisioning is required.

Step 8 If a CARLOSS alarm repeatedly appears and clears, use the following steps to examine the layout of your network to determine whether the Ethernet circuit is part of an Ethernet manual cross-connect.

Step 9 If the reporting Ethernet circuit is part of an Ethernet manual cross-connect, then the reappearing alarm might be a result of mismatched STS circuit sizes in the setup of the manual cross-connect. Perform the following steps unless the Ethernet circuit is part of a manual cross-connect:

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

b.Click the Select Affected Circuits dialog box that appears.

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

d.From the examination of the layout of your network, 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 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 Ethernet manual cross-connect circuit connects the Ethernet 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.

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. For more information, refer to the

Cisco ONS 15327 Procedure Guide.

Step 10 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC to report

aservice-affecting problem (1-800-553-2447).

2.6.33CARLOSS (G Series)

Major (MJ), Service Affecting (SA)

A Carrier Loss alarm on the LAN G-Series Ethernet (traffic) card is the data equivalent of an LOS (OC-N) alarm (see page 2-84). The Ethernet card has lost its link and is not receiving a valid signal.

CARLOSS on the G1000-2 card is caused by one of two situations:

The G1000-2 port reporting the alarm is not receiving a valid signal from the attached Ethernet device. The CARLOSS can be caused by an improperly connected Ethernet cable or a problem with the signal between the Ethernet device and the G1000-2 port.

If a problem exists in the end-to-end path (including possibly the far-end G1000-2 card), it causes the reporting G1000-2 card to turn off the Gigabit Ethernet transmitter. Turning off the transmitter typically causes the attached device to turn off its link laser, which results in a CARLOSS on the reporting G1000-2 card. The root cause is the problem in the end-to-end path. When the root cause is cleared, the far-end G1000-2 port turns the transmitter laser back on and clears the CARLOSS on

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Cisco Systems ONS 15327 manual Carloss G Series

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.