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Cisco Systems ONS 15327 manual Procedure Clear the Carloss G Series Alarm

Models: ONS 15327

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Chapter 2 Alarm Troubleshooting

Alarm Procedures

the reporting card. If a turned-off transmitter causes the CARLOSS alarm, other alarms such as a TPTFAIL (G-Series) alarm (see page 2-120)or OC-N alarms or conditions on the end-to-end path normally accompany the CARLOSS (G-Series) alarm.

Refer to the Cisco ONS 15327 Reference Manual for a description of the G1000-2 card's end-to-end Ethernet link integrity capability. Also see the “TRMT” section on page 2-120for more information about alarms that occur when a point-to-point circuit exists between two G1000-2 cards.

Ethernet card ports must be enabled (in service, IS) for CARLOSS to occur. CARLOSS is declared after no signal is received for approximately 2.5 seconds.

Warning Invisible laser radiation might be emitted from the end of the unterminated fiber cable or connector. Do not stare into the beam directly with optical instruments. Viewing the laser output with certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100

mmmight pose an eye hazard. Use of controls or adjustments or performance of procedures other than those specified might result in hazardous radiation exposure.

Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15327. Plug the wristband cable into the ESD jack located between the top high-speed and XTC slots.

Procedure: Clear the CARLOSS (G Series) Alarm

Step 1 Verify that the straight-through (Category 5) LAN cable is properly connected and attached to the correct port.

Step 2 If the straight-through (Category 5) LAN cable is correctly connected and attached, verify that the cable connects the card to another Ethernet device and is not misconnected to an OC-N card.

Step 3 If no misconnection to the OC-N card exists, verify that the attached transmitting Ethernet device is operational. If not, troubleshoot the device.

Step 4 If the alarm does not clear, use an Ethernet test set to determine that a valid signal is coming into the Ethernet port.

For specific procedures to use the test set equipment, consult the manufacturer.

Step 5 If a valid Ethernet signal is not present and the transmitting device is operational, replace the straight-through (Category 5) LAN cable connecting the transmitting device to the Ethernet port.

Step 6 If the alarm does not clear and link autonegotiation is enabled on the G1000-2 port, but the autonegotiation process fails, the G1000-2 turns off its transmitter laser and reports a CARLOSS alarm. If link autonegotiation has been enabled for the port, verify whether there are conditions that could cause autonegotiation to fail:

a.Confirm that the attached Ethernet device has autonegotiation enabled and is configured for compatibility with the asymmetric flow control on the G1000-2.

b.Confirm that the attached Ethernet device configuration allows reception of flow control frames.

Step 7 If the alarm does not clear, disable and reenable the Ethernet port to attempt to remove the CARLOSS condition. (The autonegotiation process restarts.)

Step 8 If the alarm does not clear and a TPTFAIL (G-Series) alarm (see page 2-120)alarm is also reported, complete the “Clear the TPTFAIL (G-Series) Alarm” procedure on page 2-120. If the TPTFAIL alarm is not reported, continue to the next step.

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-34

March 2004

 

 

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Cisco Systems ONS 15327 manual Procedure Clear the Carloss G Series Alarm
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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.