Connectivity 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 auto-detects and auto-configures Dell
EMC EqualLogic storage arrays 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, re-configure 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 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 auto-configuration 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
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