Users Guide

Fabric OS Administrator’s Guide 399
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Virtual Fabrics considerations for Traffic Isolation Zoning
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• 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 Fabrics considerations for Traffic Isolation Zoning
This section describes how TI zones work with Virtual Fabrics. See Chapter 11, “Managing
Virtual Fabrics,” 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.
Although logical switches that use XISLs allow the creation of a TI zone with failover disabled,
this is not a supported configuration. Base switches do not allow the creation of a TI zone with
failover disabled.
• 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 47 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 47 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 (FID 1) and one in the base fabric.
FIGURE 47 Dedicated path with Virtual Fabrics
Figure 48 shows a logical representation of FID1 in Figure 47. To create the dedicated path, you
must create and activate a TI zone in FID1 that includes the circled ports shown in Figure 48.
= 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
6
7
12
1
8
5
3
8
1715
16
14
1311
10
9
Host
Target