Brocade Fabric OS Administrator's Guide Supporting Fabric OS v6.3.0 (53-1001336-02, November 2009)
Fabric OS Administrator’s Guide 261
53-1001336-02
iSCSI gateway service overview
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FIGURE 34 IQN example
You may create a different IQN prefix using the iscsiSwCfg
--modifygw -t <tgtname> command.
The prefix portion may be used to identify companies or organizations (e.g., Brocade, Microsoft,
etc.). Your organization may suggest or require a specific format for the prefix portion of the IQN.
Changing and displaying the IQN prefix
1. Connect 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.
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), 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.
The following figure shows a discovery domain set (DDSet 1), which 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.
IP Network
iS C S I gateway s ervic e
iS CS I v irtual targe ts (V Ts )
iS CS I in itia tor A
iS CS I in itia tor B
VT 1
VT 2
VT 3
iiqn.2003-11. c o m.m ic r os oft: win 2k-s n-192168102
iqn.2003-11. c o m.m ic r os oft: win 2k -sn-192168101
iqn.2002-12. c o m. brocade:10: 00:00: 05: 1e:aa : bb: c c
iqn.2002-12. c o m. brocade:10: 00: 00: 05: 1e:c c :bb: a a
iqn.2002-12. c o m. brocade:10: 00: 00: 05: 1e:bb: cc: aa