Concept Guide

[no] iscsi cos {enable | disable | dot1p vlan-priority-value [remark] | dscp dscp-value
[remark]}
• enable: enables the application of preferential QoS treatment to iSCSI trac so that iSCSI packets are scheduled in the switch
with a dot1p priority 4 regardless of the VLAN priority tag in the packet. The default is: iSCSI packets are handled with dotp1
priority 4 without remark.
• disable: disables the application of preferential QoS treatment to iSCSI frames.
• dot1p vlan-priority-value: species the virtual local area network (VLAN) priority tag assigned to incoming packets in an
iSCSI session. The range is from 0 to 7. The default is: the dot1p value in ingress iSCSI frames is not changed and the same priority
is used in iSCSI TLV advertisements if you do not enter the iscsi priority-bits command (Step 10).
• dscp dscp-value: species the DSCP value assigned to incoming packets in an iSCSI session. The range is from 0 to 63. The
default is: the DSCP value in ingress packets is not changed.
• remark: marks incoming iSCSI packets with the congured dot1p or DSCP value when they egress the switch. The default is: the
dot1 and DSCP values in egress packets are not changed.
8 (Optional) Set the aging time for iSCSI session monitoring.
CONFIGURATION mode
[no] iscsi aging time time.
The range is from 5 to 43,200 minutes.
The default is 10 minutes.
9 (Optional) Congures DCBX to send iSCSI TLV advertisements.
LLDP CONFIGURATION mode or INTERFACE LLDP CONFIGURATION mode
[no] advertise dcbx-app-tlv iscsi.
You can send iSCSI TLVs either globally or on a specied interface. The interface conguration takes priority over global conguration.
The default is Enabled.
10 (Optional) Congures the advertised priority bitmap in iSCSI application TLVs.
LLDP CONFIGURATION mode
[no] iscsi priority-bits.
The default is 4 (0x10 in the bitmap).
11 (Optional) Congures the auto-detection of Compellent arrays on a port.
INTERFACE mode
[no] iscsi profile-compellent.
The default is: Compellent disk arrays are not detected.
Displaying iSCSI Optimization Information
To display information on iSCSI optimization, use the following show commands.
• Display the currently congured iSCSI settings.
show iscsi
• Display information on active iSCSI sessions on the switch.
show iscsi sessions
• Display detailed information on active iSCSI sessions on the switch . To display detailed information on specied iSCSI session, enter the
session’s iSCSI ID.
show iscsi sessions detailed [session isid]
• Display all globally congured non-default iSCSI settings in the current Dell EMC Networking OS session.
iSCSI Optimization
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