Brocade FICON Administrator's Guide v7.1.0 (53-1002753-01, March 2013)

68 FICON Administrator’s Guide
53-1002753-01
Traffic Isolation Zoning
5
FIGURE 19 Emulation topology using Enhanced TI Zones
Figure 19 on page 68 shows the following Enhanced TI Zoning definitions for the emulation
topology:
• Green TI Zone includes channel 0, ISL 80, ISL 81, Grid 1, and Grid 4.
• Blue TI Zone includes channel 1, ISL 82, ISL 83, and CU Grid-4.
The unique characteristic of these zones is that each channel is defined with two control unit
device ports and one of the control unit device ports, CU Grid-4, is in both zones. In a traditional TI
Zone definition, these zones would have to be combined to provide the appropriate connectivity,
but then in the event of an ISL failure it would lead to a multi-hop, multi-emulation path that would
severely affect performance. Multi-hop paths are not certified for FICON configurations.
CPU1
0
40 41
1B1A
1E 1E0F 1E
83
82
80
81
1
Grid 1
TI Zone 1
Grid 4
TI Zone 2