Quick Reference Guide

46 | Getting Started
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Figure 3-19. Displaying the Current Software Version
There are two options for downloading a new software image to the switch:
• Method 1—Xmodem: A slower but simpler way to retrieve the software image is to use Xmodem.
See Using Xmodem to Download Software on page 46
• Method 2—TFTP: Download the image from a TFTP server, detailed below in Using TFTP to
Download Software on page 47.
Both the TFTP and Xmodem procedures download the image to the switch with the image filename
unchanged.
If the copy process is incomplete or the copied file is corrupt, you can revert to the previous OS version, if
it was intact and working. If corruption is detected in the new image before it downloads the current image
into flash memory, the original image remains intact in flash. CRC fails once the image is downloaded into
memory or a packet's checksum fails during download.
If the image gets corrupted in flash, the only recourse before SFTOS v. 2.5.1 was to download a new image
using Xmodem, described next. After you install v. 2.5.1, which has support for on-board storage of two
SFTOS images, it is easier to revert to the previous image.
Using Xmodem to Download Software
An alternative to using TFTP to upgrade the software image is to use the Xmodem protocol at the console
port. You can use the
copy xmodem command or the reload command, as used here:
1. From Privileged Exec mode, enter the command
reload.
2. You then have 2 seconds to select option 2, as shown below in Figure 3-20 on page 47.
3. Then, from the boot menu, select 4 to choose the “XMODEM” option.
Force10 #show hardware
Switch: 1
System Description............................. Force10 S50
Vendor ID...................................... 07
Plant ID....................................... 01
Country Code................................... 04
Date Code......................................
Serial Number.................................. 114
Part Number....................................
Revision.......................................
Catalog Number................................. SA-01-GE-48T
Burned In MAC Address.......................... 00:D0:95:B7:CD:2E
Software Version............................... F.2.2.1.6
Additional Packages............................ Force10 QOS
Force10 Stacking