Command Line Reference Guide

Defaults 10 minutes
Command Modes CONFIGURATION
Command History
Version 9.0(1.3) Introduced on the S5000.
iscsi cos
Set the QoS policy that is applied to the iSCSI flows.
S5000
Syntax
iscsi cos {enable | disable | dot1p vlan-priority-value
[remark] | dscp dscp-value [remark]}
To disable the QoS policy, use the no iscsi cos dscp command.
Parameters
enable Enter the keyword enable to allow the application of preferential
QoS treatment to iSCSI traffic so that the iSCSI packets are
scheduled in the switch with a dot1p priority 4 regardless of the VLAN
priority tag in the packet. The default is: the iSCSI packets are
handled with dotp1 priority 4 without remark.
disable Enter the keyword disable to disable the application of preferential
QoS treatment to iSCSI frames.
dot1p vlan-
priority-value
Enter the dot1p value of the VLAN priority tag assigned to the
incoming packets in an iSCSI session. The range is 0 to 7. The default
is the dot1p value in ingress iSCSI frames is not changed and is used
in iSCSI TLV advertisements if you did not enter the iscsi
priority-bits
command.
dscp dscp-value Enter the DSCP value assigned to the incoming packets in an iSCSI
session. The valid range is 0 to 63. The default is: the DSCP value in
ingress packets is not changed.
remark Marks the incoming iSCSI packets with the configured dot1p or DSCP
value when they egress to the switch. The default is: the dot1and
DSCP values in egress packets are not changed.
Defaults See Parameters.
Command Modes CONFIGURATION
Command History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
By default, iSCSI flows are assigned to dot1p priority 4. Dell Networking recommends changing
the dot1p priority-queue setting to 0 (zero).
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