Reference Guide

∙ FSPF supports a maximum of 16 paths to a given domain. This includes paths in a TI zone.
∙ To include a trunk group in a TI zone, you must include all ports of the trunk in the TI zone.
∙ Each TI zone is interpreted by each switch and each switch considers only the routing required for its local ports. No
consideration is given to the overall topology and to whether the TI zones accurately provide dedicated paths through the whole
fabric.
For example, in the following figure the TI zone was configured incorrectly and E_Port "3,9" was erroneously omitted from the zone. The
domain 3 switch assumes that traffic coming from E_Port 9 is not part of the TI zone and so that traffic is routed to E_Port 11 instead of
E_Port 12, if failover is enabled. If failover is disabled, the route is broken and traffic stops.
FIGURE 43 TI zone misconfiguration
Additional configuration rules for enhanced TI zones
Enhanced TI zones (ETIZ) have the following additional configuration rules:
∙ Enhanced TI zones are supported only if every switch in the fabric is ETIZ capable. A switch is ETIZ capable if it meets the
following qualifications:
– The switch must be one of the supported platforms, as listed in the Supported Platforms section.
– The switch must be running Fabric OS v6.4.0 or later.
∙ If the fabric contains a switch running an earlier version of Fabric OS, you cannot create an enhanced TI zone. You cannot
merge a downlevel switch into a fabric containing enhanced TI zones, and you cannot merge a switch with enhanced TI zones
defined into a fabric containing switches that do not support ETIZ.
∙ Overlapping TI zones must have the same failover type. That is, both must be either failover enabled or failover disabled.
Traffic Isolation Zoning
Brocade Fabric OS Administration Guide, 8.0.1
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