Vixel 9000 Series Installation & Configuration Guide CHAPTER 5 Using Stealth-3 Loop Switching
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• Port types (protocols):
— E_Port (inter-switch link, or ISL)
— F_Port (point-to-point device)
— StealthLoop (switch private device loop)
— AutoDetect (detects E_Port or StealthLoop)
Switch Identification in a Cascaded Topology
In Stealth-3 Mode, when a second switch is connected to the Vixel 9000 Series
Switch, both switches check for a user-designated “master switch.” If none is found,
the switches arbitrate for mastership, and the switch with the lowest World-wide
Name (WWN) is designated as “master switch.” (All other connected switches are
identified as “cascaded switches.”) The switches then exchange the addresses of
their connected devices and resolve any existing address conflicts. Once the master
switch has been determined, that switch retains mastership until it is disconnected.
To view the “master switch” status for a switch, in the Command Line Interface
(CLI) type config mode cfg show from the Root Menu; in the Web Manager
click System from the available options.
To view the World-wide Name (WWN) for a switch, in the Command Line
Interface (CLI) type show info from the Root Menu; in the Web Manager click
System and then click Info on the left side menu.
Configuring Ports for Connected Hubs
Under the Stealth-3 Mode, ports with connected hubs can be configured as any of
the available port address settings; note that the Intra-Loop Communication Range
port address setting, which contains at least seven AL_PAs (depending on the
AL_PA range selected), was designed to allow the connected hub’s devices to
communicate.
Device Maximums
Under Stealth-3 Mode, the number of addresses needed by each device determines
how many devices can be connected to the switch. (126 addresses are available for
both the Vixel 9100 and the Vixel 9200.)
Routing in the Switch
Under Stealth-3 Mode, packets are routed using the Arbitrated Loop protocol. The
Vixel 9000 Series Fibre Channel Switches support I/O probes traditionally used by
SCSI initiator hosts.
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