Users Guide

1. Configure an interface or interface range to detect a connected storage device.
interface ethernet node/slot/port:[subport]
interface range ethernet node/slot/port:[subport]-node/slot/port[:subport]
2. Enable the interface to support a storage device that is directly connected to the port and not automatically detected by
iSCSI. Use this command for storage devices that do not support LLDP. The switch autodetects and autoconfigures Dell
EMC EqualLogic storage arrays that are directly connected to an interface when you enable iSCSI optimization.
iscsi profile-storage storage-device-name
3. Configure DCBX to use LLDP to send iSCSI application TLVs with dot1p priorities for iSCSI traffic in INTERFACE mode.
lldp tlv-select dcbxp-appln iscsi
4. Return to CONFIGURATION mode.
exit
5. (Optional) If necessary, reconfigure the iSCSI TCP ports and IP addresses of target storage devices in CONFIGURATION
mode. Separate TCP port numbers with a comma, from 0 to 65535; default 860 and 3260.
iscsi target port tcp-port1 [tcp-port2, ..., tcp-port16] [ip-address ip-address]
6. Configure the QoS policy applied to ingress iSCSI flows. Apply the service policy to ingress interfaces in CONFIGURATION
mode.
(Optional) Reset the default CoS dot1p priority, the default is 4 and/or the trusted DCSP value that is used for iSCSI traffic.
Assign an internal qos-group queue, from 0 to 7, to dot1p, from 0 to 7, and DSCP, from 0 to 63, values in POLICY-CLASS-
MAP mode.
class-map type application class-iscsi
policy-map type application policy-iscsi
class class-iscsi
set qos-group traffic-class-number
set cos dot1p-priority
set dscp dscp-value
end
service-policy type application policy-iscsi
7. Enable iSCSI monitoring sessions on TCP ports in CONFIGURATION mode.
iscsi session-monitoring enable
8. (Optional) Set the aging time for the length of iSCSI monitoring sessions in CONFIGURATION mode, 5 to 43,200 minutes;
default 10.
iscsi aging time [minutes]
9. (Optional) Reconfigure the dot1p priority bits advertised in iSCSI application TLVs in CONFIGURATION mode. The default
bitmap is 0x10 (dot1p 4). The default dot1p 4 value is sent in iSCSI application TLVs only if you enabled the PFC pause for
dot1p 4 traffic using the pfc-cos dot1p-priority command.
If you do not configure an iscsi priority-bits dot1p value and you configure a set cos value in Step 6, the set
cos value is sent in iSCSI application TLVs. If you configure neither the iscsi priority-bits nor the set cos value,
the default dot1p 4 advertises.
iscsi priority-bits dot1p-bitmap
10. Enable iSCSI auto-detection and autoconfiguration on the switch in CONFIGURATION mode.
iscsi enable
Configure iSCSI optimization
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# iscsi profile-storage compellent
OS10(conf-if-eth1/1/1)# lldp tlv-select dcbxp-appln iscsi
OS10(conf-if-eth1/1/1)# exit
1474
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