System Management Commands
4-35
4
Frame Size Commands
This section describes commands used to configure the Ethernet frame size on the
switch.
jumbo frame
This command enables support for jumbo frames. Use the
no
form to disable it.
Syntax
[
no
]
jumbo frame
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
• This switch provides more efficient throughput for large sequential data
transfers by supporting jumbo frames up to 10 KB for the Gigabit Ethernet
ports. 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 4-33).
Example
Table 4-10 Frame Size Commands
Command
Function
Mode
Page
jumbo frame
Enables support for jumbo frames
GC
4-35
Console(config)#jumbo frame
Console(config)#
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