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6-16
Switch Memory and Configuration
Using Primary and Secondary Flash Image Options
Figure 6-9.
Determining the Software Version in Primary and Secondary Flash
Switch Software Downloads
The following table shows the switch’s options for downloading a software
version to flash and booting the switch from flash
Table 6-1.
Primary/Secondary Memory Access
The different software download options involve different
copy
commands,
plus
xmodem
,
usb
, and
tftp
. These topics are covered in Appendix A, “File
Transfers”.
Download Interruptions.
In most cases, if a power failure or other cause
interrupts a flash image download, the switch reboots with the image previ-
ously stored in primary flash. In the unlikely event that the primary image is
corrupted, as a result of an interruption, the switch will reboot from secondary
flash and you can either copy the secondary image into primary or download
another image to primary from an external source. Refer to Appendix A, “File
Transfers”.
1.
In this example
show
version
indicates the
switch has version K.12.02
in primary flash
.
2. After the
boot system
command,
show version
indicates that version
K.12.01 is in secondary
flash.
Action
Menu
CLI
Web
Browser
SNMP
Download to Primary
Yes
Yes
Yes
Yes
Download to Secondary
No
Yes
No
Yes
Boot from Primary
Yes
Yes
Yes
Yes
Boot from Secondary
No
Yes
No
Yes
3500-5400-6200-8200-MCG-Jan08-K_13_01.book Page 16 Monday, January 28, 2008 10:04 AM