Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 1474
Con iSCSI optimization
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1. Configure an interface or interface range to detect a connected storage device. interface ethernet node/slot/port:[subport] interface range ethernet node/slot/port:[subport]-node/slot/port[:subport] 2. Enable the interface to support a storage device that is directly connected to the port and not automatically detected by iSCSI. Use this command for storage devices that do not support LLDP. The switch autodetects and autoconfigures Dell EMC EqualLogic storage arrays that are directly connected to an interface when you enable iSCSI optimization. iscsi profile-storage storage-device-name 3. Configure DCBX to use LLDP to send iSCSI application TLVs with dot1p priorities for iSCSI traffic in INTERFACE mode. lldp tlv-select dcbxp-appln iscsi 4. Return to CONFIGURATION mode. exit 5. (Optional) If necessary, reconfigure the iSCSI TCP ports and IP addresses of target storage devices in CONFIGURATION mode. Separate TCP port numbers with a comma, from 0 to 65535; default 860 and 3260. iscsi target port tcp-port1 [tcp-port2, ..., tcp-port16] [ip-address ip-address] 6. Configure the QoS policy applied to ingress iSCSI flows. Apply the service policy to ingress interfaces in CONFIGURATION mode. (Optional) Reset the default CoS dot1p priority, the default is 4 and/or the trusted DCSP value that is used for iSCSI traffic. Assign an internal qos-group queue, from 0 to 7, to dot1p, from 0 to 7, and DSCP, from 0 to 63, values in POLICY-CLASSMAP mode. class-map type application class-iscsi policy-map type application policy-iscsi class class-iscsi set qos-group traffic-class-number set cos dot1p-priority set dscp dscp-value end service-policy type application policy-iscsi 7. Enable iSCSI monitoring sessions on TCP ports in CONFIGURATION mode. iscsi session-monitoring enable 8. (Optional) Set the aging time for the length of iSCSI monitoring sessions in CONFIGURATION mode, 5 to 43,200 minutes; default 10. iscsi aging time [minutes] 9. (Optional) Reconfigure the dot1p priority bits advertised in iSCSI application TLVs in CONFIGURATION mode. The default bitmap is 0x10 (dot1p 4). The default dot1p 4 value is sent in iSCSI application TLVs only if you enabled the PFC pause for dot1p 4 traffic using the pfc-cos dot1p-priority command. If you do not configure an iscsi priority-bits dot1p value and you configure a set cos value in Step 6, the set cos value is sent in iSCSI application TLVs. If you configure neither the iscsi priority-bits nor the set cos value, the default dot1p 4 advertises. iscsi priority-bits dot1p-bitmap 10. Enable iSCSI auto-detection and autoconfiguration on the switch in CONFIGURATION mode. iscsi enable Configure iSCSI optimization OS10(config)# interface ethernet 1/1/1 OS10(conf-if-eth1/1/1)# iscsi profile-storage compellent OS10(conf-if-eth1/1/1)# lldp tlv-select dcbxp-appln iscsi OS10(conf-if-eth1/1/1)# exit 1474 Converged data center services
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