Concept Guide

CONFIGURATION mode
iscsi enable
3 For a DCB environment: Congure iSCSI Optimization.
EXEC Privilege mode
iSCSI conguration: copy CONFIG_TEMPLATE/iSCSI_DCB_Config running-config.
The conguration les are stored in the ash memory in the CONFIG_TEMPLATE le.
NOTE: DCB/DCBx is enabled when you apply the iSCSI conguration in step 3. If you manually apply the iSCSI
conguration by following steps 1 and 2, enable link layer discovery protocol (LLDP) before enabling iSCSI in step 2. You
cannot disable LLDP if you enable iSCSI.
4 Save the conguration on the switch.
EXEC Privilege mode
write memory
5 Reload the switch.
EXEC Privilege mode
reload
After the switch is reloaded, DCB/ DCBx and iSCSI monitoring are enabled.
6 (Optional) Congure 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] [ip-address 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
congure 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. If multiple IP addresses are mapped to a single TCP port, use the no iscsi target
port
tcp-port-n command to remove all IP addresses assigned to the TCP number.
To delete a specic IP address from the TCP port, use the no iscsi target port tcp-port-n ip-address address
command to specify the address to be deleted.
• ip-address species the IP address of the iSCSI target. When you enter the no form of the command, and the TCP port you
want to delete is one bound to a specic IP address, include the IP address value in the command.
If multiple IP addresses are mapped to a single TCP port, use the no iscsi target port command to remove all IP
addresses assigned to the TCP port number.
To remove a single IP address from the TCP port, use the no iscsi target port ip-address command.
7 (Optional) Set the QoS policy that is applied to the iSCSI ows.
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 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).
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iSCSI Optimization