Chapter 5 Troubleshooting

Troubleshooting Supervisor Engines

If the status is “power-bad,” the switch detects a switching module but is unable to allocate power. This situation is possible if the supervisor engine cannot able to access the serial PROM (SPROM) contents on the module in order to determine the identification of the line card. Enter the show idprom module slot command to verify that the SPROM is readable. If the SPROM is not accessible, reset the module.

Enter the show diagnostics online module slot number command to identify hardware failures on the module. If the module still does not come online, create a service request with Cisco Technical Support in order to troubleshoot further. Use the log of the switch output that you collected in the above output and the troubleshooting steps that you performed.

Interface Problems

If you see an error mentioned in the output of the show interface command, the reason could be:

A physical layer problem, such as a faulty cable or NIC

A configuration problem, such as a speed and duplex mismatch

A performance problem, such as an oversubscription

In order to understand and troubleshoot these problems, refer to Troubleshooting Switch Port and Interface Problems at:

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008015bfd6.shtm l

Workstation Is Unable to Log In to the Network

If you observe that a workstation is unable to log into the network during startup or unable to obtain the DHCP address when you have powered up a client machine or rebooted, an initial connectivity delay that the switch introduced could be the problem. To verify this, check the following:

Microsoft network client displays "No Domain Controllers Available".

DHCP reports "No DHCP Servers Available."

A Novell Internetwork Packet Exchange (IPX) network workstation does not have the Novell login screen upon bootup.

An AppleTalk network client displays, "Access to your AppleTalk network has been interrupted. In order to reestablish your connection, open and close the AppleTalk control panel." The AppleTalk client chooser application can either fail to display a zone list or display an incomplete zone list.

IBM Network stations can have one of these messages:

NSB83619—Address resolution failed

NSB83589—Failed to boot after 1 attempt

NSB70519—Failed to connect to a server

The reason for these symptoms can be an interface delay that either Spanning Tree Protocol (STP), EtherChannel, trunking, or an autonegotiation delay causes. For more information about these delays and possible solutions, refer to

:

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00800b1500.sht ml

If you review and follow the procedure in the document and you still have issues, contact Cisco Technical Support.

 

 

Catalyst 4500 E-Series Switches Installation Guide

 

 

 

 

 

 

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Cisco Systems 4500 E-Series, WSUPOE12VPSPL manual Interface Problems, Workstation Is Unable to Log In to the Network

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.