About Configuring The Maximum Transmission Unit Size - VERITAS NetBackup 5230 Configuration Manual

About configuring the maximum transmission
unit size
Deduplication (MSDP) Disk Configuration (continued)
Table 1-15
Field
Size
The MTU property controls the maximum transmission unit size for an Ethernet
frame. The standard maximum transmission unit size for Ethernet is 1500 bytes
(without headers). In supported environments, the MTU property can be set to larger
values up to 9000 bytes. Setting a larger frame size on an interface is commonly
referred to as using jumbo frames. Jumbo frames help reduce fragmentation as
data is sent over the network and in some cases, can also provide better throughput
and reduced CPU usage. To take advantage of jumbo frames, the Ethernet cards,
drivers, and switching must all support jumbo frames. Additionally, each server
interface that is used to transfer data to the appliance must be configured for jumbo
frames.
Veritas recommends that if you configure the MTU property of an interface to values
larger than 1500 bytes, make sure that all systems that are connected to the
appliance on the specific interface have the same maximum transmission unit size.
Such systems include but are not limited to NetBackup clients and remote desktops.
Also verify the network hardware, OS, and driver support on all systems before you
configure the MTU property.
You can configure the MTU property for an interface by using the
command in the NetBackup Appliance Shell Menu.
See the
SetProperty
Guide.

About configuring the maximum transmission unit size

Setting
command in the NetBackup Appliance Command Reference
Preparing for initial configuration
SetProperty
30