Chapter 1 General Troubleshooting

Power and LED Tests

Procedure: Isolate the Cause of Power Supply Problems

Step 1 If a single ONS 15327 show signs of fluctuating power or power loss:

a.Verify that the –48 VDC #8 power terminals are properly connected to a fuse panel. These power terminals are located on the lower section of the backplane EIA under the clear plastic cover.

b.Verify that the power cable is #12 or #14 AWG and in good condition.

c.Verify that the power cable connections are properly crimped. Stranded #12 or #14 AWG does not always crimp properly with Staycon type connectors.

d.Verify that 20 A fuses are used in the fuse panel.

e.Verify that the fuses are not blown.

f.Verify that a rack-ground cable attaches to the frame-ground terminal (FGND) on the right side of the ONS 15327 EIA. Connect this cable to the ground terminal according to local site practice.

g.Verify that the DC power source has enough capacity to carry the power load.

h.If the DC power source is battery-based:

•Check that the output power is high enough. Power requirements range from –42 VDC to –57 VDC.

•Check the age of the batteries. Battery performance decreases with age.

•Check for opens and shorts in batteries, which might affect power output.

•If brown-outs occur, the power load and fuses might be too high for the battery plant.

Step 2 If multiple pieces of site equipment show signs of fluctuating power or power loss:

a.Check the uninterruptible power supply (UPS) or rectifiers that supply the equipment. Refer to the UPS manufacturer’s documentation for specific instructions.

b.Check for excessive power drains caused by other equipment, such as generators.

c.Check for excessive power demand on backup power systems or batteries when alternate power sources are used.

1.9.2Power Consumption for Node and Cards

Symptom You are unable to power up a node or the cards in a node.

Table 1-42describes the potential cause of the symptom and the solution.

Table 1-42 Power Consumption for Node and Cards

Possible Problem

Solution

 

 

Improper power supply.

Refer to power information in the Cisco ONS 15327 Procedure Guide.

 

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

 

April 2003

1-79

 

 

 

Page 104 Page 106
Page 105
Image 105
Cisco Systems ONS 15327 manual Power Consumption for Node and Cards, Procedure Isolate the Cause of Power Supply Problems
Page 104 Page 106

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.
Top Page Image Contents