HP Cisco MDS 9216 - Fabric Switch Configuration Manual page 1001

Chapter 50 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
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Enabling proxy initiator mode of an iSCSI interface that is part of an iSLB VRRP group impacts load
Caution
balancing on the interface. See the
Balancing" section on page
The Cisco MDS switches support the following iSCSI session limits:
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If more than five iSCSI sessions try to come up simultaneously on a port, the initiator receives a
Note
temporary error and later retries to create a session.
Transparent Initiator Mode
Each iSCSI host is presented as one virtual Fibre Channel host (that is, one Fibre Channel N port). The
benefit of transparent mode is it allows a finer-level of Fibre Channel access control configuration.
Because of the one-to-one mapping from iSCSI to Fibre Channel, each host can have different zoning or
LUN access control on the Fibre Channel storage device.
When an iSCSI host connects to the IPS module or MPS-14/2 module, a virtual host N port (HBA port)
is created for the host (see
Port WWN.
OL-16184-01, Cisco MDS SAN-OS Release 3.x
In -proxy initiator mode, there is only one virtual Fibre Channel host per one IPS port and all iSCSI
hosts use that to access Fibre Channel targets. In a scenario where the Fibre Channel storage device
requires explicit LUN access control for every host, the static configuration for each iSCSI initiator
can be overwhelming. In such case, using the proxy- initiator mode simplifies the configuration.
50-45.
The maximum number of iSCSI sessions on a switch is 5000.
The maximum number of iSCSI sessions per IPS port in transparent initiator mode is 500.
The maximum number of iSCSI sessions per IPS port in proxy initiator mode is 500.
The maximum number of concurrent sessions an IPS port can create is five (but the total number of
sessions that can be supported is 500).
Figure
"Changing iSCSI Interface Parameters and the Impact on Load
50-17). Every Fibre Channel N port requires a unique Node WWN and
Cisco MDS 9000 Family CLI Configuration Guide
Configuring iSCSI
50-15