Chapter 4
| System Management Commands
File Management
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Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
â—† This switch provides more efficient throughput for large sequential data
transfers by supporting layer 2 jumbo frames on Gigabit and 10 Gigabit
Ethernet ports or trunks up to 10240 bytes. Compared to standard Ethernet
frames that run only up to 1.5 KB, using jumbo frames significantly reduces the
per-packet overhead required to process protocol encapsulation fields.
â—† To use jumbo frames, both the source and destination end nodes (such as a
computer or server) must support this feature. Also, when the connection is
operating at full duplex, all switches in the network between the two end
nodes must be able to accept the extended frame size. And for half-duplex
connections, all devices in the collision domain would need to support jumbo
frames.
â—† The current setting for jumbo frames can be displayed with the show system
command.
Example
Console(config)#jumbo frame
Console(config)#
Related Commands
show system (131)
show ipv6 mtu (916)
File Management
Managing Firmware
Firmware can be uploaded and downloaded to or from an FTP/TFTP server. By
saving runtime code to a file on an FTP/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.
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