Switch User Manual

connections, all devices in the collision domain would need to support jumbo
frames.
• The current setting for jumbo frames can be displayed with the show system
command (page 23-7).
Example
Console(config)#jumbo frame
Console(config)#
Related Commands
show ipv6 mtu (41-19)
File Management Commands
Managing Firmware
Firmware can be uploaded and downloaded to or from a TFTP server. By saving
runtime code to a file on a TFTP server, that file can later be downloaded to the
switch to restore operation. The switch can also be set to use new firmware without
overwriting the previous version.
When downloading runtime code, the destination file name can be specified to
replace the current image, or the file can be first downloaded using a different name
from the current runtime code file, and then the new file set as the startup file.
Saving or Restoring Configuration Settings
Configuration settings can be uploaded and downloaded to and from a TFTP server.
The configuration file can be later downloaded to restore switch settings.
The configuration file can be downloaded under a new file name and then set as the
startup file, or the current startup configuration file can be specified as the
destination file to directly replace it. Note that the file “Factory_Default_Config.cfg”
can be copied to the TFTP server, but cannot be used as the destination on the
switch.
Table 23-5 Flash/File Commands
Command
copy
delete
dir
whichboot
boot system
23-10
Function
Copies a code image or a switch configuration to or from flash
memory or a TFTP server
Deletes a file or code image
Displays a list of files in flash memory
Displays the files booted
Specifies the file or image used to start up the system
Mode Page
PE 23-11
PE 23-13
PE 23-14
PE 23-15
GC 23-16
System Management Commands
23