280 Fabric OS Administrator’s Guide
53-1002446-01
Supported configurations for Traffic Isolation Zoning
12
• Routing rules imposed by TI zones with failover disabled override regular zone definitions.
Regular zone definitions should match TI zone definitions.
• FSPF supports a maximum of 16 paths to a given domain. This includes paths in a 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 Figure 41, 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 41 TI zone misconfiguration
Supported configurations for Traffic Isolation Zoning
Note the following configuration rules for TI zones:
• Ports in a TI zone must belong to switches that run Fabric OS v6.0.0 or later. For TI over FCR
zones, all switches and FC routers in both edge and backbone fabrics must be running Fabric
OS v6.1.0 or later.
• For the FC8-64 blade in the Brocade DCX and DCX 8510-8, ports 48–63 can be in a TI zone
only if all switches in that TI zone are running Fabric OS v6.4.0 or later. Ports 48–63 can still be
in a failover path for TI traffic.
The Brocade DCX-4S and DCX 8510-4 do not have this limitation.
• VE_Ports are supported in TI zones.
• TI Zoning is not supported in fabrics with switches running firmware versions earlier than
Fabric OS v6.0.0. However, the existence of a TI zone in such a fabric is backward-compatible
and does not disrupt fabric operation in switches running earlier firmware versions.
TI over FCR is not backward compatible with Fabric OS v6.0.x or earlier. The -1 in the
domain,index entries causes issues to legacy switches in a zone merge. Firmware downgrade
is prevented if TI over FCR zones exist.
7
12
= Dedicated path
= Ports in the TI zone
Domain 1 Domain 3
Domain 4
8
19
6
9
2
10
5
11
8
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