Fabric OS 6.2 administrator guide 343
• Set up a TI zone in an edge fabric to guarantee that traffic from a specific device in that edge fabric is
routed through a particular EX_Port or VEX_Port.
• Set up a TI zone in the backbone fabric to guarantee that traffic between two devices in different fabrics
is routed through a particular ISL (VE_Ports or E_Ports) in the backbone.
This combination of TI zones in the backbone and edge fabrics ensures that the traffic between devices in
different fabrics traverses the same VE_Port tunnel in a backbone fabric. Figure 46 shows how three TI
zones form a dedicated path between devices in different edge fabrics. The backbone fabric can contain
one or more FC routers.
Figure 46 Traffic isolation Routing over FCR
In addition to setting up TI zones, you must also ensure that the devices are in an LSAN zone so that they
can communicate with each other.
If failover is enabled and the TI path is not available, an alternate path is used. If failover is disabled and
the TI path is not available, devices are not imported.
NOTE: For TI over FCR, all switches in the backbone fabric and in the edge fabrics must be running
Fabric OS 6.1.0 or later.
TI within an edge fabric
A TI zone within an edge fabric is used to route traffic between a real device and a proxy device through
a particular EX_Port. For example, in Figure 47, you can set up a TI zone to ensure that traffic between Host
1 and the proxy target is routed through EX_Port 9.
Edge fabric 1
Edge fabric 2
Backbone
fabric
= Dedicated path set up by TI zone in edge fabric 1
= Dedicated path set up by TI zone in edge fabric 2
= Dedicated path set up by TI zone in backbone fabric
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