The Egress Buffer Discard Threshold setting for this traffic group. This setting controls the maximum size of the group egress queue. When set to 'medium' or 'low', the maximum number of buffers permitted in the queue is reduced so packets are dropped sooner and their buffers made available for higher priority traffic. However, this also reduces the maximum traffic burst that can be absorbed without dropping packets. The default is 'high'. This setting may not be changed if any queue in the template is configured for lossless behavior (see hpSwitchTrafficGroupLossless). This setting is not supported on all devices.