About the maximum transmission unit size on the appliance

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 in excess of 9,000 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 things as 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 of an appliance network interface using the SetProperty command from Main > Network view of the Access Appliance shell menu.