Chapter 5 Troubleshooting

Troubleshooting Supervisor Engines

Configuration register

Calendar

VLAN database

If a software upgrade is performed on both the active and standby supervisor engines, verify that both supervisor engines are running the same new software image. If the software images are not the same, upgrade the software image. Use the procedure in the software configuration guide for your release.

If the standby supervisor engine still does not come on line, create a service request with Cisco Technical Support. Use the log of the switch output that you collected from the previous troubleshooting steps.

Switch Self-reset

If the switch has reset or rebooted on its own, verify that the power source for the switch did not fail. If you use an uninterruptable power supply (UPS), make sure that the UPS does not have any problems.

The switch might have had a software crash. Enter the more crashinfo:data command to display the crash information including date and time of the last time that the switch crashed. To display the standby supervisor engine crash data, enter the more slavecrashinfo:data command. The crash data are not present if the switch has never crashed.

Switch# more crashinfo:data

Current time: 04/21/2000 19:58:10

Last crash: 04/21/2000 03:58:56

!--- Output suppressed.

If the output indicates a software crash at the time that you suspect that the switch rebooted, the problem can be something other than a hardware failure. Contact Cisco Technical Support with the output of these commands:

show tech-support

show logging

more crashinfo:data

If you are still unable to determine the problem, contact Cisco Technical Support.

Ports 1/2 and 2/2 Do Not Function

If you have dual supervisor engines in a Catalyst 4507R or a Catalyst 4510R chassis and your ports 1/2 and 2/2 do not function, the system is functioning as designed, which is to have two uplinks operational at all times. The dual uplinks must also work when only one supervisor engine is present. This means that if only one supervisor engine is present and is in slot 1, both ports 1/1 and 1/2 are functional. Also, if only one supervisor engine is present and is in slot 2, ports 2/1 and 2/2 are functional. When dual supervisor engines are present, only ports 1/1 and 2/1 are functional and 1/2 and 2/2 are not functional. For more information, refer to the redundancy chapter in the software configuration guide.

Packet Loss

If your system exhibits partial or full loss of network connectivity or packet loss, perform basic troubleshooting procedures to eliminate the common causes. The common causes include:

Bad cabling

 

 

Catalyst 4500 E-Series Switches Installation Guide

 

 

 

 

 

 

OL-13972-01

 

 

5-13

 

 

 

 

 

Page 109
Image 109
Cisco Systems 4500 E-Series, WSUPOE12VPSPL manual Switch Self-reset, Ports 1/2 and 2/2 Do Not Function, Packet Loss

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.