Chapter 5 Troubleshooting

System Boot Verification

Troubleshooting Backplane Modules, page 5-7

Troubleshooting Switching Modules, page 5-8

Troubleshooting Supervisor Engines, page 5-10

Some Problems and Solutions, page 5-14

Note This chapter covers only the chassis component hardware aspects of troubleshooting. For software configuration issues, refer to the software configuration guide

http://www.cisco.com/en/US/products/hw/switches/ps4324/products_installation_and_configuration_g uides_list.html

or command reference

http://www.cisco.com/en/US/products/hw/switches/ps4324/prod_command_reference_list.html

for your software release.

System Boot Verification

When the initial system boot is complete, verify the following:

That the system software boots successfully

Hook up a terminal and view the startup banner. Use an RJ-45-to-RJ-45 rollover cable to connect the console port to a PC with terminal emulation software set for 9600 baud, 8 data bits, no parity, and 1 stop bit. Watch for any system messages after startup.

That the power supplies are supplying power to the system

The power supply’s LEDs should be green. Use the show environment Cisco IOS command to view power supply activity.

That the system fan assembly is operating

Listen for fan activity. The Fan tray LED should be green during operation. Use the show environment Cisco IOS command to view fan tray activity.

That the supervisor engine and all switching modules are installed properly in their slots, and that each initialized without problems

If all of these conditions are met and the hardware installation is complete, refer to the software configuration guide and command reference publications for your switch so that you can troubleshoot the software.

If any of these conditions is not met, use the procedures in this chapter to isolate and, if possible, resolve the problem.

Using LEDs to Identify Startup Problems

The key to success when troubleshooting the system is to isolate the problem to a specific system component. Your first step is to compare what the system is doing to what it should be doing. All system states in the startup sequence are indicated by LEDs. By checking the LEDs, you can determine when

Catalyst 4500 E-Series Switches Installation Guide

5-2

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Cisco Systems WSUPOE12VPSPL, 4500 E-Series manual System Boot Verification, 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.

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