Changing And Displaying The Iqn Prefix; Access Control With Discovery Domains; Iqn Example - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

iS C S I initiator A
iqn.2003-11.c om.mic ros oft: win2k-s n-192168101
iS C S I initiator B
iiqn.2003-11.c om.mic ros oft: win2k-s n-192168102
Figure 37

IQN example

You can create a different IQN prefix using the iscsiSwCfg - -modifygw -t <tgtname>
command. The prefix portion may be used to identify companies or organizations (for example, HP,
Microsoft, and so forth). Your organization may suggest or require a specific format for the prefix portion of
the IQN.

Changing and displaying the IQN prefix

1. Connect to and log in to the switch.
2. Enter the iscsiSwCfg - -modifygw -t <tgtname> command, where <tgtname> is the
value you want to use as the IQN prefix to change the IQN prefix.
switch:admin>iscsiswcfg --modifygw -t iqn.2007-10.com.brocade
The operation completed successfully
3. Enter the iscsiSwCfg --showgw command to display the IQN prefix.
switch:admin> iscsiswcfg --showgw
Target name is: iqn.2007-10.com.brocade
The operation completed successfully

Access control with discovery domains

You can limit access to iSCSI VTs using a discovery domain (DD), which is a group of the iSCSI initiators
and iSCSI VTs. The iSCSI initiators can access only the iSCSI VTs that are in the same discovery domain.
Discovery domains are grouped together in a discovery domain set (DDSet). The active discovery domain
set enforces the fabric-wide iSCSI VT access. Only the DDs in the active DDSet are enforced. You can
create multiple discovery domain sets but only one set can be active at a time.
It is also possible to present a single iSCSI portal IP address to the iSCSI initiator when the default iSCSI
port configuration is in effect and connection redirection is disabled on the blade.
Figure 38 shows a discovery domain set (DDSet 1) that contains two discovery domains (DD1 and DD2).
When DDSet 1 is active, iSCSI initiator A can access only iSCSI VT 1, and iSCSI initiator B can access only
VT 2 and VT 3.
304 iSCSI gateway service
iS C S I virtual targets (V T s )
IP Network
V T 1
iqn.2002-12.c om.broc ade: 10: 00: 00: 05: 1e: aa: bb: c c
V T 2
iqn.2002-12.c om.broc ade: 10: 00: 00: 05: 1e: c c : bb: aa
V T 3
iqn.2002-12.c om.broc ade: 10: 00: 00: 05: 1e: bb: c c : aa
iS C S I gateway s ervic e