Chapter 5 Troubleshooting

Using LEDs to Identify Startup Problems

and where the system failed in the startup sequence. If you have problems after the switch is on, refer to the following subsystem troubleshooting information and the configuration procedures in the software configuration guide for your switch.

After you connect the power cords to your Catalyst 4500 series switch, follow these steps to determine whether your system is operating properly:

Step 1 Check the power supply LEDs:

The LED labeled GOOD should turn green when power is applied to the supply. The LED should remain on during normal system operation.

If the LED labeled GOOD does not light, or if the LED labeled FAIL lights, see the “Troubleshooting the Power Supply” section on page 5-4.

Note If a power supply is installed and not connected to a power source, power supply LEDs indicate a failure.

Step 2 Listen for the system fan assembly. The system fan assembly should be operating whenever system power is on. If you do not hear it when the switch is on, see the “Troubleshooting the Fan Assembly” section on page 5-6.

Step 3 Check that the LEDs on the supervisor engine light as follows:

The LED labeled STATUS flashes orange once and stays orange during diagnostic boot tests.

It turns green when the module is operational (online).

If the system software is unable to start up, this LED stays orange.

If the LED labeled STATUS on the supervisor engine front panel is red or orange, connect a console to the management port and use the show environment command to check for possible problems.

The Ethernet management port LED turns green when the module is operational (online) and a link is established with another network device. If no signal is detected, the LED labeled LINK turns off.

If there is a problem with the supervisor engine, try reseating the supervisor engine in the chassis and restarting the switch. For more information about LED meanings, refer to the “LEDs” section on page 1-22. For more troubleshooting information, see the “Troubleshooting Supervisor Engines” section on page 5-10.

Step 4 Verify that the LEDs labeled STATUS on each switching module are green when the supervisor engine completes initialization.

This LED indicates that the supervisor engine and switching modules are receiving power, have been recognized by the supervisor engine, and contain a valid Flash code version. However, this LED does not indicate the state of the individual interfaces on the switching modules. If an LED labeled STATUS is red or orange, try reseating the switching module or supervisor engine and restarting the switch. For more information, see the “Troubleshooting Switching Modules” section on page 5-8. If you determine that the switching module is not operating, contact Cisco TAC as described in the “Some Problems and Solutions” section on page 5-14.

Step 5 If the boot information and system banner are not displayed, verify that the terminal is set for 9600 baud, 8 data bits, no parity, and 1 stop bit and connected properly to the console port.

Catalyst 4500 E-Series Switches Installation Guide

 

OL-13972-01

5-3

 

 

 

Page 99
Image 99
Cisco Systems 4500 E-Series, WSUPOE12VPSPL manual Troubleshooting Using LEDs to Identify Startup Problems

4500 E-Series, WSUPOE12VPSPL specifications

Cisco Systems has long been at the forefront of networking technology, consistently delivering innovative products that shape the future of digital communication. Among its extensive range of offerings, the WSUPOE12VPSPL and the Catalyst 4500 E-Series stand out as exemplary solutions tailored for businesses seeking robust, scalable, and versatile network infrastructure.

The WSUPOE12VPSPL is a 12-port Power over Ethernet (PoE) switch that provides significant advantages for organizations looking to streamline their operations. It is designed to deliver power and data over a single cable, reducing the clutter of additional power supplies and cords. This efficiency not only simplifies deployment but also enhances the flexibility to place devices anywhere within the network environment, making it an ideal choice for powering IP phones, wireless access points, and surveillance cameras.

Main features of the WSUPOE12VPSPL include its ability to deliver up to 15.4 watts of power per port, supporting up to 12 PoE devices simultaneously. This capability is especially beneficial in environments where power outlets are scarce or where devices are located in non-traditional locations. With a rugged design suitable for various operational contexts, it ensures reliable performance even under demanding conditions.

When integrated within the Catalyst 4500 E-Series switches, organizations can leverage advanced technologies that enhance overall network performance and security. The Catalyst 4500 E-Series is known for its modularity, allowing businesses to expand their networks as required. Its architecture supports high throughput, advanced QoS features, and extensive Layer 2 and Layer 3 capabilities, ensuring efficient data handling and management.

Moreover, the Catalyst 4500 E-Series can integrate with Cisco’s digital network architecture and software-defined networking (SDN), facilitating automation and better visibility through tools such as Cisco DNA Center. This allows IT administrators to efficiently manage network resources, monitor performance, and implement security policies with ease.

In terms of operational intelligence, the integration with analytics tools enables organizations to gain insights into traffic patterns, user behaviors, and application performance, thus empowering data-driven decision-making.

Overall, the Cisco WSUPOE12VPSPL and the Catalyst 4500 E-Series offer a powerful combination of features, technologies, and characteristics that make them indispensable to modern networking. They cater to the demands of diverse business environments, ensuring reliability, flexibility, and scalability as organizations continue to evolve in an increasingly digital landscape.