Software Upgrade 89

sends a write request packet to the TFTP server, then sends the data packets to the server, and receives the ACK from the server. The TFTP transmission files have two forms, i.e., binary for program transmission and ASCII for text transmission.

Following is the upgrading procedure described taking the Switch 8814 working as a TFTP Client as an example.

2TFTP upgrade procedure

Step 1: Connect the Switch to a PC where the desired file is located via the management/upgrade Ethernet port. (In this case, you should know the IP address of the PC. At the same time, connect the Switch to an external PC (that can be the same one that contains the desired file) via the Console port.

Step 2: Run the TFTP Server program on the PC connected to the management/upgrade Ethernet port, and specify the path for upgrading the application files.

Step 3: Run the terminal emulation program on the PC connected to the Console port, and boot the switch to access the Boot menu.

Step 4: Enter 5 in the Boot menu. Press Enter and the system will access the download application program menu.

ETHERNET SUBMENU

1.Download file to SDRAM through ethernet interface and boot

2.Download file to Flash through ethernet interface

3.Download file to HardDisk through ethernet interface

4.Modify ethernet interface boot parameter

0. Return to main menu

Be sure to select 4 to modify boot parameter before downloading! Enter your choice(0-4): 4

Step 5: Enter 4 in the download application program menu to select TFTP for the software upgrading. Press Enter and then you can begin to set the related TFTP parameters:

Note: Two protocols for download, tftp & ftp.

You can modify the flags following the menu. tftp--0x80, ftp--0x0.

The information above prompts you to set the flags to 0x80 when you download

n files using TFTP and to 0x0 if using FTP.

’.’ = clear field;

’-’ = go to previous field; ^D = quit

boot device

:fei0

processor number

:

 

host name

:

8500 ,

file name

: 8500.app

inet on ethernet (e)

: 1.1.1.1

inet on backplane (b):

 

host inet (h)

: 1.1.1.2

gateway inet (g)

:

 

user (u)

:

 

ftp password (pw) (blank = use rsh):

flags (f)

:0x80

target name (tn)

:

 

startup script (s)

:

 

other (o)

:

 

Write flash...done!

 

 

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3Com 8810, 8807, 8814 manual Files using Tftp and to 0x0 if using FTP

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.