Vixel 9000 Series Installation & Configuration Guide CHAPTER 5 Using Stealth-3 Loop Switching
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Cascading Switches
Stealth-3 Loop Switching Mode allows you to cascade switches as part of a star
topology. Note: Switches must be connected to a root (central) switch. Under
Stealth-3 Mode, the central switch must be designated as “master switch.” Hosts on
cascaded switches can access any storage (such as RAIDs, JBODs, and hubs)
through the central switch and other cascaded switches. These hosts can also access
their own local RAIDs.
Configuring the Switch and Its Ports
If you are not sure what settings to use, start with the default Stealth-3 values. By
default, all ports are set to InstantLoop for automatic address assignment and to
AutoDetect for instant detection of StealthLoop (loop device protocol) or E_Port
(inter-switch link protocol). (F_Port for point-to-point devices must be manually
set.)
Also note the following configuration options.
• Port-based zoning. The Vixel 9000 Series Switch’s port-based zoning allows
groups that share a switched topology to keep their data separate. For example,
human resources may not want other departments to be able to access sensitive
data on devices connected to port 2. In this case, communication to port 2 can
be disabled for all other ports.
• Notification of added devices through LIP propagation, enabled and selected by
port. You can choose to send or receive LIP propagation (or both). Note: Each
switch will maintain the currently assigned addresses unless an address conflict
needs to be resolved.
• Cascaded switches, as part of a star topology.
Figure 5-2. A Stealth-3 Mode topology involving three switches
RAID RAID
HOST HOST
JBOD JBOD
RAIDRAIDRAIDRAIDRAID RAID
HOST
Vixel 9000
Series Switch
HOST HOST
RAIDRAID
HOST
RAID
HOST
Vixel
Switch
Vixel 9000
Series Switch
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