Reference Guide
Table 27. iSCSI Optimization Defaults (continued)
Parameter Default Value
VLAN priority tag iSCSI flows are assigned by default to dot1p priority 4 without
the remark setting.
DSCP None: user-configurable.
Remark Not configured.
iSCSI session aging time 10 minutes
iSCSI optimization target ports iSCSI well-known ports 3260 and 860 are configured as
default (with no IP address or name) but can be removed as
any other configured target.
iSCSI session monitoring Disabled. The CAM allocation for iSCSI is set to zero (0).
iSCSI Optimization Prerequisites
The following are iSCSI optimization prerequisites.
● iSCSI optimization requires LLDP on the switch. LLDP is enabled by default (refer to Link Layer Discovery Protocol (LLDP)).
● iSCSI optimization requires configuring two ingress ACL groups The ACL groups are allocated after iSCSI Optimization is
configured.
Configuring iSCSI Optimization
To configure iSCSI optimization, use the following commands.
1. For a non-DCB environment: Enable session monitoring.
CONFIGURATION mode
cam-acl l2acl 4 ipv4acl 4 ipv6acl 0 ipv4qos 2 l2qos 1 l2pt 0 ipmacacl 0 vman-qos 0
ecfmacl 0 fcoeacl 0 iscsioptacl 2
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 the show iscsi command displays this information.
2. For a non-DCB environment: Enable iSCSI.
CONFIGURATION mode
iscsi enable
3. For a DCB environment: Configure iSCSI Optimization.
EXEC Privilege mode
iSCSI configuration: copy CONFIG_TEMPLATE/iSCSI_DCB_Config running-config.
The configuration files are stored in the flash memory in the CONFIG_TEMPLATE file.
NOTE:
DCB/DCBx is enabled when you apply the iSCSI configuration in step 3. If you manually apply the iSCSI
configuration 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 configuration on the switch.
EXEC Privilege mode
write memory
400
iSCSI Optimization