Isns; About Isns Client Functionality - Cisco MDS 9000 series Configuration Manual

Chapter 4 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
switch# show zoneset active vsan 2
zoneset name iscsi-zoneset-v2 vsan 2
zone name iscsi-zone-2 vsan 2
* fcid 0x750001 [pwwn 21:00:00:20:37:6f:fe:54]
* fcid 0x750101 [pwwn 21:00:00:20:37:a6:a6:5d]
* fcid 0x750200 [pwwn 20:06:00:0b:fd:44:68:c2]

iSNS

Internet Storage Name Service (iSNS) allows your existing TCP/IP network to function more effectively
as a SAN by automating the discovery, management, and configuration of iSCSI devices. To facilitate
these functions, the iSNS server and client function as follows:
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All iSCSI devices (both initiator and target) acting as iSNS clients, can register with an iSNS server.
iSCSI initiators can then query the iSNS server for a list of targets. The iSNS server will respond with a
list of targets that the querying client can access based on configured access control parameters.
A Cisco MDS 9000 Family switch can act as an iSNS client and register all available iSCSI targets with
an external iSNS server. All switches in the Cisco MDS 9000 Family with IPS modules or MPS-14/2
modules installed support iSNS server functionality. This allows external iSNS clients, such as an iSCSI
initiator, to register with the switch and discover all available iSCSI targets in the SAN.
This section includes the following topics:
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•
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About iSNS Client Functionality

The iSNS client functionality on each IPS interface (Gigabit Ethernet interface or subinterface or
PortChannel) registers information with an iSNS server. You must specify an iSNS server's IP address
by creating an iSNS profile, adding the server's IP address to it, and then assigning (or "tagging") the
profile to the interface. An iSNS profile can be tagged to one or more interfaces.
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)
The iSNS client registers iSCSI portals and all iSCSI devices accessible through them with an iSNS
server.
The iSNS server provides the following services for the iSNS client:
Device registration
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State change notification
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Remote domain discovery services
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About iSNS Client Functionality, page 4-79
Creating an iSNS Client Profile, page 4-80
About iSNS Server Functionality, page 4-83
Configuring iSNS Servers, page 4-84
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Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
iSNS
FC ID
resolved for
iSCSI
initiator
4-79