Loading Software From Console Port Using Xmodem - Huawei Quidway S3526 Installation Manual

Installation Manual
Quidway S3526 Ethernet Switch
Caution:
Please remember the BootROM password you have modified when using the switch.
1. Download application file to flash
2. Select application file to boot
3. Display all files in flash
4. Delete file from flash
5. Modify bootrom password
0. Reboot
Enter your choice(0-5):

6.2.2 Loading Software from Console Port Using XModem

I. Introduction to XModem
XModem is a file transfer protocol widely used due to its simplicity and good functions.
XModem transfers files via Console port, supporting data packets of 128 bytes and 1KB.
With respect to reliability, it supports checksum, CRC, and error packet retransmission
mechanism. Normally, the maximum number of retransmission attempts is ten.
XModem transmission is completed by receiving program and sending program.
Receiving program initiates packet checking method negotiation by sending the
negotiation character. If the negotiation passes, sending program starts packet
transmission. Upon the receipt of a complete packet, the receiving program checks it
using the agreed-upon check method. If the check succeeds, the receiving program
sends an acknowledgement character; if the check fails, it sends a reject character.
Upon the receipt of the acknowledgement, the sending program continues to send the
next packet; upon the receipt of the reject, it retransmits the packet.
II. Loading BootROM
Follow these steps to download the BootROM program:
Step 1: Press <Ctrl + U> in the Boot Menu displayed in the section "6.2.1 Boot Menu" to
access the BootROM loading menu shown below:
Enter your choice(0-5):
Please set bootrom download protocol parameter:
1. Set TFTP protocol parameter
BOOT MENU
Chapter 6 BootROM and Host Software Loading
6-3