Dell PowerConnect 8024 CLI Reference Guide - Page 330

www.dell.com | support.dell.com Example The following example sets the aging time for iSCSI sessions to 100 minutes. console(config)#iscsi aging time 100 iscsi cos The iscsi cos command sets the quality of service profile that will be applied to iSCSI flows. To return to the default value, use the no form of this command. Syntax iscsi cos {vpt vpt | dscp dscp} [remark] no iscsi cos • vpt/dscp - The VLAN Priority Tag or DSCP value to assign iSCSI session packets. • remark - Mark the iSCSI frames with the configured VPT/DSCP when egressing the switch. Default Configuration See the user guidelines for default value information. Command Mode Global Configuration mode. User Guidelines iSCSI flows are assigned by default to the highest VPT/DSCP mapped to the highest queue not used for stack management or the voice VLAN. Make sure you configure the relevant Class of Service parameters for the queue in order to complete the setting. Setting the VPT/DSCP sets the QoS profile which determines the egress queue to which the frame is mapped. The switch default setting for egress queues scheduling is Weighted Round Robin (WRR). Complete the QoS setting by configuring the relevant ports to work in other scheduling and queue management modes via the commands that control the Class of Service settings, such as the strict priority for the queue used for iSCSI traffic. The downside of strict priority is that, in certain circumstances (under heavy high priority traffic), other lower priority traffic may get starved. In WRR the queue to which the flow is assigned to can be set to get the required percentage. Example The following example sets the quality of service profile that will be applied to iSCSI flows. console(config)#iscsi cos vpt 5 remark 330 iSCSI Flow Acceleration Commands