S
YSTEM
M
ANAGEMENT
C
OMMANDS
20-12
Command Usage
• This switch provides more efficient throughput for large sequential
data transfers by supporting jumbo frames up to 9216 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.
• 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.
• The current setting for jumbo frames can be displayed with the show
system command (page 20-8).
Example
Related Commands
show ipv6 mtu (36-27)
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.
Console(config)#jumbo frame
Console(config)#
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