Lenovo RackSwitch G8272, Руководство по установке

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© Copyright Lenovo 2019 Chapter 5: Initializing the G8272
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Recovering from a Failed Image Upgrade using XModem Download
Use the following procedure to recover from a failed image upgrade.
1.
Connect a PC to the serial port of the switch.
2.
Open a terminal emulator program that supports Xmodem download (for
example, HyperTerminal, SecureCRT or PuTTY) and select the following serial
port characteristics:
 Speed: 9,600 bps

Data Bits: 8
 Stop Bits: 1
 Parity: None
 Flow Control: None
3.
Reload the switch and access the Boot Management menu by pressing
Shift + B
when the following message appears and the dots are being displayed.
4.
Enter Boot Recovery Mode by selecting
R
. The Recovery Mode menu appears.
5. Select
X
for Xmodem download. The following is displayed:
6. When you see the following message, change the Serial Port speed to 115,200 bps:
7. Press Enter to set the system into download accept mode. When the readiness
meter displays (a series of “
C
” characters), start Xmodem on your terminal
emulator. The following is displayed:
8.
Select the image to download. Xmodem initiates the file transfer. When download
is complete, you are asked to change the Serial Port speed back to 9,600 bps:
Press shift-B for startup menu or shift-R for recovery mode: ...
Running xmodem rescue.....
Change the baud rate to 115200 bps and hit the <ENTER> key before
initiating the download.
... Waiting for the <Enter> key to be hit before the download can start...
CC
Change the baud rate back to 9600 bps, hit the <ENTER> key