3Com Router User Manual

User Identity Management27
By default, no user is set on the router. In this case, the user can log onto the 
router without username and password, operating as the administrator user and 
have the right to execute all commands.
The router should be configured with at least one administrator user. This is 
because any user can log onto the router as the administrator user if no user is set 
on the router which could lead to a breach in network security.
If a user is configured on the router, no matter...

28CHAPTER 2: 3COM ROUTER USER INTERFACE
By default, the system clock is 08:00:00 1 1 1997.
The system clock will reset to the initial number when the configuration is deleted 
by using the delete command or is deleted at the boot menu. 
3Reboot the system
Please perform the following commands in all views.
Ta b l e 13   Reboot the system
Before rebooting the system, make sure to save the current configuration by using 
the save command, or some configuration may lost. 
Display the System 
Information of...

II
SYSTEM MANAGEMENT
Chapter 3System Management
Chapter 4Terminal Service
Chapter 5Configuring Network Management
Chapter 6Display and Debugging Tools
Chapter 7POS Terminal Access Service 

30 

3
SYSTEM MANAGEMENT
This chapter includes information on the following topics:
■Storage Media and File Types Supported by the System
■Upgrade Boot ROM Software
■Upgrade the 3Com Router Main Program Software
■Configure On-Line Upgrading of the Card
■Configuration File Management
■Configure FTP
Storage Media and 
File Types Supported 
by the SystemThe 3Com Router series has three types of storage media:
■DRAM (Dynamic Random Access Memory), where the 3Com Router main 
program executes.
■Flash memory, to...

32CHAPTER 3: SYSTEM MANAGEMENT
Quickly input Ctrl+D to enter the Boot ROM menu. If Ctrl+D is not input within 
three seconds, the system will restart the router and the following prompt 
information displays:
      ******************************************
      *                                                *
      * 3Com Router Series Bootrom, V4.25   *
      *                                                *
      ******************************************
  3Com Corporation Copyright(C) Reserved....

Upgrade Boot ROM Software33
5Example: if you select baud rate 115200 bps, the system will prompt you to 
modify the baud rate and select XMODEM transfer protocol:
 Download speed is 115200 bps. Change the terminals speed to 115200
 bps, and select XMODEM protocol. Press ENTER key when ready.
According to the above prompt, change the baud rate setting at the terminal to 
the number equal to the baud rate of the software selected to download. After 
having set the baud rate of the terminal, disconnect and...

34CHAPTER 3: SYSTEM MANAGEMENT
Figure 16   “Send file” message window
8After downloading, the router will save the file into Flash or NVRAM, display the 
following information, and prompt restoring of the baud-rate setting of the 
terminal emulator.
Download completed.
Writing to flash memory...
Please waiting, it needs a long time ##############
Write Bootrom Success.
Please return to 9600 bps. Press ENTER key to reboot the system.
The above information indicates that the information is downloaded....

Upgrade the 3Com Router Main Program Software35
You can load the 3Com Router main software with XModem or TFTP (Trivial File 
Transfer Protocol) approach when powering on the router. Alternatively, you can 
load the software with the FTP (File Transfer Protocol) approach after the router is 
booted.
XModem Approach
1Power on the router. The router performs a Power-On Self-Test (POST), and the 
following information displays:
3Com Router start booting
******************************************
*...

36CHAPTER 3: SYSTEM MANAGEMENT
3: 38400 bps
4: 57600 bps
5: 115200 bps
6: Exit and Reboot
Enter your choice(1-6):
Make your selection as needed.
5After a baud rate (115200 bps for example) is selected, the system displays the 
following information to prompt you to modify the baud rate and select the 
XModem protocol:
Download speed is 115200 bps. Change the terminals speed to 
115200 bps, and select XMODEM protocol. Press ENTER key when ready.
Perform the operation as prompted to change the baud rate...