Enhanced Transmission Selection

ETS is a DCB feature that enables you to allocate bandwidth on a NIC to applications based on their DCB priority.

The following figure shows the ETS feature of DCB in a network.

Figure 6-1  Enhanced Transmission Selection in DCB

The host in the figure has different types of traffic, such as FCoE and iSCSI, that share the link bandwidth. In the figure, the priority and bandwidth as shown in the following table are assigned for different types of traffic.

The DCBX ETS TLV with the corresponding ETS bandwidth allocation is as follows:

To use the ETS feature, the NIC must support the feature and run in the DCB mode. When you enable LLDP, the default configuration for the ETS feature is automatically set up if the underlying link supports DCB. However, you can modify the default configuration. For more information, see Customizing Enhanced Transmission Selection for DCB, Recommending ETS Configuration to the Peer, and Displaying ETS Configuration Information.