3com 8814 User Manual
86
C
HAPTER
6: S
WITCH
M
ONITORING
AND
M
AINTENANCE
c
CAUTION: While using the Switch, keep in mind the latest Boot ROM password.
MAIN MENU
1. Boot with default mode
2. Boot from Flash
3. Boot from HardDisk
4. Enter serial submenu
5. Enter ethernet submenu
6. Modify Flash description area
7. Modify bootrom password
0. Reboot
Enter your choice(0-7):
n
You must ensure the upgraded host program is compatible with the existing Boot
ROM program of the I/O module. Otherwise, you have to upgrade it during host
program upgrade.
ROM program of the I/O module. Otherwise, you have to upgrade it during host
program upgrade.
When loading the host program through the Boot menu, you must configure
correct attributes of the serial interface (as shown in Figure 61). Otherwise, the
Hyper Terminal does not respond.
correct attributes of the serial interface (as shown in Figure 61). Otherwise, the
Hyper Terminal does not respond.
Figure 61 Attribute settings of Hyper Terminal serial interface
Upgrading software through console port (XModem)
1 Brief introduction to XModem
XModem, a type of file transfer protocol, is broadly applied for its simplicity and
good performance. It transmits files through serial interfaces, supporting 128
bytes and 1Kbytes in terms of data unit, checksum and CRC in terms of checking
mode, and multiple retransmissions (usually ten attempts) in the event that packet
errors are found.
good performance. It transmits files through serial interfaces, supporting 128
bytes and 1Kbytes in terms of data unit, checksum and CRC in terms of checking
mode, and multiple retransmissions (usually ten attempts) in the event that packet
errors are found.