94CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

c CAUTION:

You must reboot the switch using the reboot command to validate the host program. If Flash memory space is not enough, you can delete some of the program files in Flash after completing the Boot ROM loading. (3Com recommends that you delete the host program that is no longer in use.) Then upload the host program to the switch using FTP.

Make sure that you have saved other the configuration before rebooting.

Do not power the switch off during the loading process.

The Boot ROM and host program loading process is now complete.

Using TFTP

Using the CLI to upgrade using TFTP is similar to using FTP. The only difference is that you use the tftp get command to download software to the switch. In this case, the switch can only be used as a TFTP client to download the software to its Flash memory from the TFTP server. Once the download is complete all remaining steps are the same.

Upgrading the If you have the 360G Fabric (3C17508), download the application software image Application Module files to the compact flash (CF) and then boot from the CF.

Program

If you have the 720G Fabric (3C17539), download the application software image files directly to the Fabric’s onboard flash.

Troubleshooting the This section describes the problems may occur during the software upgrade.

Software Upgrade

No response from the fabric serial interface

Make sure the serial interface cable is in good condition and that its attributes are set correctly.

Uploading the configuration file or host program using FTP fails

Check that the:

Configuration is correct and that the FTP server is started.

Flash has enough space for the target files.

TFTP flag is selected (TFTP is not supported).

The configuration did not save during the I/O module reboot

Before saving the configuration, you must check the operating status of the I/O module. Do not save the configuration during the I/O module reboot. Otherwise, the configuration you want to save may be lost.

I/O module program loading fails or you cannot register for a long period

Check that the I/O module type is supported on the current host program.

Check that the I/O module Boot ROM program matches the host program.

Check that the I/O modules are well seated.

Insert an I/O module to other slots to make sure it is not defective.

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3Com 8814, 8807, 8810 manual Boot ROM and host program loading process is now complete, Using Tftp, Program

8810, 8814, 8807 specifications

The 3Com 8814, 8810, and 8807 are renowned products from the networking giant 3Com, which played a significant role in the evolution of networking technology in the early 1990s. These devices were instrumental during a time when organizations were transitioning from traditional communication systems to more sophisticated networking solutions.

The 3Com 8814 is a multi-port networking hub designed for small to medium-sized businesses. One of its main features includes a 10Base-T Ethernet capability, allowing for fast and reliable connectivity among various devices within a local area network (LAN). The 8814 supports up to 14 connections, providing scalability for growing businesses. The hub’s ease of use is notable; it features a plug-and-play design, which aids in quick setup without requiring extensive configuration. This plug-and-play functionality, alongside its robust physical and electrical performance, made the 8814 an appealing choice for organizations looking to enhance their networking infrastructure without significant investment.

Moving on to the 3Com 8810, this device is labeled as an intelligent network switch and ushered in advancements in network management and performance. A critical element of the 8810 is its ability to support both 10/100Base-T Ethernet connections, effectively allowing mixed-speed environments. Its built-in management features, enabled by 3Com's networking technologies, offered users the ability to monitor traffic flow, manage bandwidth allocation, and configure network settings through a user-friendly interface. This switch also incorporated advanced features like VLAN support, increasing security and segmentation within networks, which proved invaluable for sophisticated networking environments.

Lastly, the 3Com 8807 represents a more versatile and high-performance switch option suited for larger networks. This model features a stackable design that allows for a broader range of scalability and redundancy. It supports both fast Ethernet and Gigabit Ethernet, ensuring that organizations can expand their network speeds as needed. The 8807 includes features for enhanced fault tolerance and link aggregation, which bolsters reliability and performance under heavy traffic loads. Its integration with 3Com's Network Management Software provided administrators with unprecedented control over their networks, empowering them to optimize performance and troubleshoot issues effectively.

Overall, the 3Com 8814, 8810, and 8807 exemplified the company's commitment to innovation in networking technology, providing businesses with the tools necessary to develop efficient, scalable, and reliable network infrastructures. Each of these devices played a crucial role in shaping the landscape of networking, emphasizing ease of use, management capabilities, and performance.