Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 510
iSCSI Optimization Example, iSCSI DCBx TLVs are supported.
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Page 510 highlights
• Auto-detection of EqualLogic storage arrays - the switch detects any active EqualLogic array directly attached to its ports. • Manual configuration to detect Compellent storage arrays where auto-detection is not supported. • Automatic configuration of switch ports after detection of storage arrays. • If you configure flow-control, iSCSI uses the current configuration. If you do not configure flow-control, iSCSI auto- configures flow control settings so that receive-only is enabled and transmit-only is disabled. . • iSCSI monitoring sessions - the switch monitors and tracks active iSCSI sessions in connections on the switch, including port information and iSCSI session information. • iSCSI QoS - A user-configured iSCSI class of service (CoS) profile is applied to all iSCSI traffic. Classifier rules are used to direct the iSCSI data traffic to queues that can be given preferential QoS treatment over other data passing through the switch. Preferential treatment helps to avoid session interruptions during times of congestion that would otherwise cause dropped iSCSI packets. • iSCSI DCBx TLVs are supported. The following illustration shows iSCSI optimization between servers and a storage array in which a stack of three switches connect installed servers (iSCSI initiators) to a storage array (iSCSI targets) in a SAN network. iSCSI optimization running on the master switch is configured to use dot1p priority-queue assignments to ensure that iSCSI traffic in these sessions receives priority treatment when forwarded on stacked switch hardware. Figure 59. iSCSI Optimization Example iSCSI Optimization 510
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