Users Guide

380 Fabric OS Administrator’s Guide
53-1002920-02
TI zone failover
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Traffic isolation is implemented using a special zone, called a Traffic Isolation zone (TI zone).
A TI zone indicates the set of N_Ports and E_Ports to be used for a specific traffic flow. When a
TI zone is activated, the fabric attempts to isolate all inter-switch traffic entering from a member
of the zone to only those E_Ports that have been included in the zone. The fabric also attempts to
exclude traffic not in the TI zone from using E_Ports within that TI zone.
Figure 35 shows a fabric with a TI zone consisting of the following:
• N_Ports: “1,7”, “1,8”, “4,5”, and “4,6”
• E_Ports: “1,1”, “3,9”, “3,12”, and “4,7”
The dotted line indicates the dedicated path between the initiator in Domain 1 to the target in
Domain 4.
FIGURE 35 Traffic Isolation zone creating a dedicated path through the fabric
In Figure 35, all traffic entering Domain 1 from N_Ports 7 and 8 is routed through E_Port 1.
Similarly, traffic entering Domain 3 from E_Port 9 is routed to E_Port 12, and traffic entering
Domain 4 from E_Port 7 is routed to the devices through N_Ports 5 and 6. Traffic coming from
other ports in Domain 1 would not use E_Port 1, but would use E_Port 2 instead.
Use the zone command to create and manage TI zones.
TI zone failover
A TI zone can have failover enabled or disabled.
Disable failover if you want to guarantee that TI zone traffic uses only the dedicated path, and that
no other traffic can use the dedicated path.
Enable failover if you want traffic to have alternate routes if the dedicated path cannot be used,
and if you want other traffic to be able to use the dedicated path if the non-dedicated paths cannot
be used.
= Dedicated Path
Domain 1 Domain 3
Domain 4
19
9
2
10
4
= Ports in the TI zone
6
7
12
7
8
5