Concept Guide

Default iSCSI Optimization Values
The following table lists the default values for the iSCSI optimization feature.
Table 46. iSCSI Optimization Defaults
Parameter Default Value
iSCSI Optimization global setting Disabled.
iSCSI CoS mode (802.1p priority queue mapping) dot1p priority 4 without the remark setting when you enable
iSCSI. If you do not enable iSCSI, this feature is disabled.
iSCSI CoS Packet classication When you enable iSCSI, iSCSI packets are queued based on dot1p,
instead of DSCP values.
VLAN priority tag iSCSI ows are assigned by default to dot1p priority 4 without the
remark setting.
DSCP None: user-congurable.
Remark Not congured.
iSCSI session aging time 10 minutes
iSCSI optimization target ports iSCSI well-known ports 3260 and 860 are congured as default
(with no IP address or name) but can be removed as any other
congured 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 conguring two ingress ACL groups The ACL groups are allocated after iSCSI Optimization is congured.
Conguring iSCSI Optimization
To congure 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 this information the show iscsi command displays this information.
2 For a non-DCB environment: Enable iSCSI.
iSCSI Optimization
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