Lsan Zones And Fabric-To-Fabric Communications; Controlling Device Communication With The Lsan - HP SN3000B Administrator's Manual

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LSAN zone configuration
Zones that contain hosts and targets that are shared between the two fabrics must be explicitly
coordinated. To share devices between any two fabrics, you must create an LSAN zone in both
fabrics containing the port WWNs of the devices to be shared. Although an LSAN is managed using
the same tools as any other zone on the edge fabric, two behaviors distinguish an LSAN from a
conventional zone:
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NOTE
The "LSAN_" prefix must appear at the beginning of the zone name. LSAN zones may not be
combined with QoS zones. Refer to
convention for QoS zones.
To enable device sharing across multiple fabrics, you must create LSAN zones on the edge fabrics
(and optionally on the backbone fabric as well), using normal zoning operations to create zones
with names that begin with the special prefix "LSAN_", and adding host and target port WWNs from
both local and remote fabrics to each local zone as desired. Zones on the backbone and on
multiple edge fabrics that share a common set of devices will be recognized as constituting a single
multi-fabric LSAN zone, and the devices that they have in common will be able to communicate
with each other across fabric boundaries.

LSAN zones and fabric-to-fabric communications

Zoning is enforced by all involved fabrics; any communication from one fabric to another must be
allowed by the zoning setup on both fabrics. If the SANs are under separate administrative control,
then separate administrators maintain access control.

Controlling device communication with the LSAN

The following procedure illustrates how LSANs control which devices can communicate with each
other. The procedure shows the creation of two LSANs (called lsan_zone_fabric75 and
lsan_zone_fabric2), which involve the following devices and connections:
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1. Log in as admin and connect to switch1.
2. Enter the nsShow command to list the WWN of the host (10:00:00:00:c9:2b:c9:0c).
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A required naming convention. The name of an LSAN begins with the prefix "LSAN_". The LSAN
name is not case-sensitive; for example, lsan_ is equivalent to LSAN_, Lsan_, and so on.
Members must be identified by their port WWN because port IDs are not necessarily unique
across fabrics. The names of the zones need not be explicitly the same, and membership lists
of the zones need not be in the same order.
Switch1 and the host in fabric75.
Switch2, Target A, and Target B in fabric2.
Switch1 is connected to the FC router using an EX_Port or VEX_Port.
Switch2 is connected to the FC router using another EX_Port or VEX_Port.
Host has WWN 10:00:00:00:c9:2b:c9:0c (connected to switch1).
Target A has WWN 50:05:07:61:00:5b:62:ed (connected to switch2).
Target B has WWN 50:05:07:61:00:49:20:b4 (connected to switch2).
NOTE
The nsShow output displays both the port WWN and node WWN; the port WWN must be used
for LSANs.
"QoS zones" on page 424 for more information about the naming
Fabric OS Administrator's Guide
53-1002446-01