Reference Guide

Traffic Isolation Zoning
∙ Traffic Isolation Zoning overview...........................................................................................................................................................................357
∙ FSPF routing rules and traffic isolation.............................................................................................................................................................359
∙ Enhanced TI zones......................................................................................................................................................................................................... 361
∙ General rules for TI zones.........................................................................................................................................................................................364
∙ Limitations and restrictions of Traffic Isolation Zoning.............................................................................................................................366
∙ Creating a TI zone..........................................................................................................................................................................................................366
∙ Modifying TI zones........................................................................................................................................................................................................367
∙ Changing the state of a TI zone.............................................................................................................................................................................368
∙ Deleting a TI zone..........................................................................................................................................................................................................368
∙ Displaying TI zones...................................................................................................................................................................................................... 368
∙ Enforcing Local TI Filtering......................................................................................................................................................................................369
∙ Fabric-Level Traffic Isolation in a backbone fabric......................................................................................................................................374
∙ Virtual Fabrics considerations for Traffic Isolation Zoning.......................................................................................................................381
∙ Traffic Isolation Zoning over FC routers with Virtual Fabrics................................................................................................................383
∙ Troubleshooting TI zone routing problems.....................................................................................................................................................385
Traffic Isolation Zoning overview
Traffic Isolation Zoning allows you to control the flow of interswitch traffic by creating a dedicated path for traffic flowing from a specific
set of source ports (N_Ports).
You might use Traffic Isolation Zoning for the following scenarios:
∙ To dedicate an ISL to high priority, host-to-target traffic.
∙ To force high volume, low priority traffic onto a given ISL to limit the effect on the fabric of this high traffic pattern.
∙ To ensure that requests and responses of FCIP-based applications such as tape pipelining use the same VE_Port tunnel
across a metaSAN.
NOTE
Traffic Isolation Zoning is an advanced feature, but does not require a license. A strong understanding of Fabric Shortest Path
First (FSPF) is required.
Isolating traffic requires that you create a special zone, called a Traffic Isolation zone (TI zone). A TI zone indicates that a set of N_Ports
and E_Ports are to be used only for a specific isolated traffic flow. When a TI zone is activated, the fabric attempts to isolate all inter-
switch traffic entering the fabric 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.
The illustration below 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.
Brocade Fabric OS Administration Guide, 8.0.1
53-1004111-02 357