Concept Guide

NOTE: Content addressable memory (CAM) allocation is optional. If CAM is not allocated, the following features are
disabled:
• session monitoring
• aging
• class of service
You can enable iSCSI even when allocated with zero (0) CAM blocks. However, if no CAM blocks are allocated, session
monitoring is disabled and this information the show iscsi command displays this information.
2 For a non-DCB environment: Enable iSCSI.
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
508
iSCSI Optimization