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Configuring iSCSI
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
Presenting iSCSI Hosts as Virtual Fibre Channel Hosts
The IPS module or MPS-14/2 module connects to the Fibre Channel storage devices on behalf of the
iSCSI host to send commands and transfer data to and from the storage devices. These modules use a
virtual Fibre Channel N port to access the Fibre Channel storage devices on behalf of the iSCSI host.
iSCSI hosts are identified by either iSCSI qualified name (IQN) or IP address.
Initiator Identification
iSCSI hosts can be identified by the IPS module or MPS-14/2 module using the following:
•
•
You can configure the iSCSI initiator identification mode on each IPS port and all the iSCSI hosts
terminating on the IPS port will be identified according to that configuration. The default mode is to
identify the initiator by name.
To specify the initiator identification mode, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# interface iscsi 4/1
switch(config-if)#
Step 3
switch(config-if)# switchport
initiator id ip-address
switch(config-if)# switchport
initiator id name
Cisco MDS 9000 Family Configuration Guide
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iSCSI qualified name (IQN)
An iSCSI initiator is identified based on the iSCSI node name it provides in the iSCSI login. This
mode can be useful if an iSCSI host has multiple IP address and you want to provide the same
service independent of the IP address used by the host. An initiator with multiple IP addresses
(multiple network interface cards—NICs) has one virtual N port on each IPS port to which it logs in.
IP address
An iSCSI initiator is identified based on the IP address of the iSCSI host. This mode is useful if an
iSCSI host has multiple IP addresses and you want to provide different service based on the IP
address used by the host. It is also easier to get the IP address of a host compared to getting the iSCSI
node name. A virtual N port is created for each IP address it uses to log in to iSCSI targets. If the
host using one IP address logs in to multiple IPS ports, each IPS port will create one virtual N port
for that IP address.
Purpose
Enters configuration mode.
Selects the iSCSI interface on the switch that identifies
all the initiators.
Identifies the iSCSI initiator based on the IP address.
Identifies the iSCSI initiator based on the initiator node
name. This is the default behavior.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Chapter 35
Configuring iSCSI
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