Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual page 1071

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
For the Fibre Channel SAN view, the IPS module or MPS-14/2 module presents iSCSI hosts as a virtual
Fibre Channel host. The storage devices communicate with the virtual Fibre Channel host similar to
communications performed with real Fibre Channel hosts (see
Figure 50-3
iSCSI iSCSI
host A
The IPS modules or MPS-14/2 modules transparently map the command between the iSCSI virtual target
and the virtual Fibre Channel host (see
Figure 50-4
IP host A
iSCSI iSCSI
iqn.host A
Routing SCSI from the IP host to the Fibre Channel storage device consists of the following main
actions:
• The iSCSI requests and responses are transported over an IP network between the hosts and the IPS
module or MPS-14/2 module.
The SCSI requests and responses are routed between the hosts on an IP network and the Fibre
•
Channel storage device (converting iSCSI to FCP and vice versa). The IPS module or MPS-14/2
module performs this conversion and routing.
The FCP requests or responses are transported between the IPS module or MPS-14/2 module and
•
the Fibre Channel storage devices.
FCP (the Fibre Channel equivalent of iSCSI) carries SCSI commands over a Fibre Channel SAN.
Note
Refer to the IETF standards for IP storage at
OL-17256-03, Cisco MDS NX-OS Release 4.x
Fibre Channel SAN View—iSCSHI Host as an HBA
MDS
IP
FC
Network
Virtual
FC host A
iSCSI to FCP (Fibre Channel) Routing
IP Network
iSCSI Virtual
Target iqn.T1
iSCSI
Session
Figure
Fibre
Channel
SAN
Target T-3
Figure 50-4).
MDS
iSCSI to FCP(FC) routing
iSCSI iSCSI
FC virtual
host pwwn-A
SCSI Routing
http://www.ietf.org for information on the iSCSI protocol.
Cisco MDS 9000 Family Fabric Manager Configuration Guide
About iSCSI
50-3).
FC
Session
FC Target T1
pwwn-T1
50-3