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 sav ing
runtime code to a file on a TFTP server, that file can later be downloade d to the
switch to restore operation. The switch can also be set to us e new firm ware w ithout
overwriting the previous version.
When downloading runtime code, the destination file na me can be specified to
replace the current image, or the file can be first downloaded using a different n ame
from the current runtime c ode fi le, and then the new file set as the star tup file.
Saving or Restoring Configuration Settings
Configuration settings can be uploaded and downloaded to and from a TFTP se rver.
The configuration file can be later downloaded to restore switch settings.
The configuration file can be downloaded under a n ew fil e nam e a nd th en set a s 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 destinat ion 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