HP StorageWorks Fabric OS 6.2 administrator guide (5697-0016, May 2009)

348 Optimizing fabric behavior
• Use care if defining TI zones with ports that are shared across Admin Domains because of the limitation
that a given port can appear in only one TI zone.
Best practice: Do not use ports that are shared across Admin Domains in a TI zone.
Virtual Fabric considerations for Traffic Isolation Routing
This section describes how TI zones work with Virtual Fabrics. See Chapter 6, ”Managing virtual fabrics”
on page 173 for information about the Virtual Fabrics feature, including Logical Switches and Logical
Fabrics.
TI zones can be created in a Logical Fabric like in regular fabrics, with the following exceptions:
• The disable failover option is not supported in Logical Fabrics that use XISLs.
• To create a TI zone for a Logical Fabric that uses XISLs, you must create two TI zones: one in the Logical
Fabric and one in the base fabric. The combination of TI zones in the base fabric and Logical Fabric
sets the path through the base fabric for Logical Switches.
The TI zone in the Logical Fabric includes the extended XISL (XISL) port numbers, as well as the F_Ports and
ISLs in the Logical Fabric.
The TI zone in the base fabric reserves XISLs for a particular Logical Fabric. The base fabric TI zone should
also include ISLs that belong to Logical Switches participating in the Logical Fabric.
Figure 50 shows an initiator and target in a Logical Fabric (FID1). The dotted line indicates a dedicated
path between initiator and target. The dedicated path passes through the base fabric over an XISL.
(Figure 50 shows only physical ISLs, not logical ISLs.) To create the TI zones for this dedicated path, you
must create a TI zone in the Logical Fabric (FID1) and one in the base fabric.
Figure 50 Dedicated path with Virtual Fabrics
Figure 51 shows a logical representation of FID1 in Figure 50. To create the dedicated path, you must
create and activate a TI zone in FID1 that includes the circled ports shown in Figure 51.
Figure 51 Creating a TI zone in a Logical Fabric
= Dedicated Path
Chassis 1 Chassis 2
XISL
XISL
XISL
XISL
Domain 8
Domain 7
Base switch
Domain 2
LS2, FID3
Domain 6
LS1, FID1
Domain 5
Base switch
Domain 1
LS4, FID3
Domain 4
LS3, FID1
Domain 3
Domain 9
2
4
= Ports in the TI zones
6
7
12
1
8
5
3
8
1715
16
14
1311
10
9
Host
Target
= Dedicated Path
2
4
= Ports in the TI zones
6
7
5
17
16
11
10
8
1
3
8
9
Host
Domain 8 Domain 3 Domain 5 Domain 9
Target