Table of Contents
Advertisement
Chapter 35
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 Fibre Channel Targets as iSCSI Targets
The IPS module or MPS-14/2 module presents physical Fibre Channel targets as iSCSI virtual targets
allowing them to be accessed by iSCSI hosts. It does this in one of two ways:
•
•
The IPS module or MPS-14/2 module does not import Fibre Channel targets to iSCSI by default. Either
Note
dynamic or static mapping must be configured before the IPS module or MPS-14/2 module makes Fibre
Channel targets available to iSCSI initiators.
Dynamic Mapping
When you configure dynamic mapping the IPS module or MPS-14/2 module imports all Fibre Channel
targets to the iSCSI domain and maps each physical Fibre Channel target port as one iSCSI target. That
is, all LU accessible through the physical storage target port are available as iSCSI LUs with the same
LU number (LUN) as in the physical Fibre Channel target port.
The iSCSI target node name is created automatically using the iSCSI qualified name (IQN) format. The
iSCSI qualified name is restricted to a maximum name length of 223 alphanumeric characters and a
minimum length of 16 characters.
The IPS module or MPS-14/2 module creates an IQN formatted iSCSI target node name using the
following conventions because the name must be unique in the SAN:
•
•
•
Note
If you have configured a switch name, then the switch name is used instead of the management IP
address. If you have not configured a switch name, the management IP address is used.
With this convention, each IPS port in a Cisco MDS 9000 Family switch creates a unique iSCSI target
node name for the same Fibre Channel target port in the SAN.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Dynamic mapping—automatically maps all the Fibre Channel target devices/ports as iSCSI devices.
Use this mapping to create automatic iSCSI target names.
Static mapping—Manually create iSCSI target devices and map them to the whole Fibre Channel
target port or a subset of Fibre Channel LUNs. With this mapping, you must specify unique iSCSI
target names.
Static mapping should be used when iSCSI hosts should be restricted to subsets of LUs in the Fibre
Channel targets and/or iSCSI access control is needed (see the
page
35-19). Also, static mapping allows configuration of transparent failover if the LUs of the Fibre
Channel targets are reachable by redundant Fibre Channel ports (see the
Failover" section on page
IPS Gigabit Ethernet ports that are not part of a VRRP group or PortChannel use this format:
iqn.1987-05.com.cisco:05.<mgmt-ip-address>.<slot#>-<port#>-<sub-intf#>.<Target-pWWN>
IPS ports that are part of a VRRP group use this format:
iqn.1987-05.com.cisco:05.vrrp-<vrrp-ID#>-<vrrp-IP-addr>.<Target-pWWN>
Ports that are part of a PortChannel use this format:
iqn.1987-02.com.cisco:02.<mgmt-ip-address>.pc-<port-ch-sub-intf#>.<Target-pWWN>
35-38).
Cisco MDS 9000 Family Configuration Guide
Configuring iSCSI
"iSCSI Access Control" section on
"Transparent Target
35-5
Advertisement
Table of Contents
