Users Guide

NOTE: You cannot enable iSCSI optimization when the VLT domain is active. To deactivate the VLT
domain, use the no vlt domain command.
The default is disabled.
2 Configure the iSCSI target ports and optionally the IP addresses on which iSCSI communication is
monitored.
CONFIGURATION mode
[no] iscsi target port tcp-port-1 [tcp-port-2...tcp-port-16] [address ip-
address]
• tcp-port-n is the TCP port number or a list of TCP port numbers on which the iSCSI target
listens to requests. You can configure up to 16 target TCP ports on the switch in one command or
multiple commands. The default is 860, 3260. Separate port numbers with a comma.
• ip-address specifies the IP address of the iSCSI target. When you enter the no form of the
command, and the TCP port to be deleted is one bound to a specific IP address, the IP address
value must be included in the command.
3 Set the QoS policy that is applied to the iSCSI flows.
CONFIGURATION mode
[no] iscsi cos {enable | disable | dot1p vlan-priority-value [remark] | dscp
dscp-value [remark]}
• enable: enables the application of preferential QoS treatment to iSCSI traffic 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: specifies 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: specifies 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 configured dot1p or DSCP value when they egress
the switch. The default is: the dot1 and DSCP values in egress packets are not changed.
4 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.
5 (Optional) Configures DCBX to send iSCSI TLV advertisements.
CONFIGURATION mode or INTERFACE mode
[no] advertise dcbx-app-tlv iscsi.
You can send iSCSI TLVs either globally or on a specified interface. The interface configuration takes
priority over global configuration.
The default is Enabled.
iSCSI Optimization 565