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CHAPTER 5 Using Stealth-3
Loop Switching
Stealth-3 Loop Switching Mode is the preferred Private Switch Address Mode for
simple, small SANs that have private devices. Stealth-3 benefits private (arbitrated)
loops in the following ways.
• Increased bandwidth: Instead of all sharing 100 MByte bandwidth, the devices
can be segmented into loops (by port) that each have their own 100 MBytes.
• Enhanced throughput: Pairs of ports in a private loop can communicate
simultaneously, mitigating the blocking nature of the arbitrated loop.
• Decreased system disruption: New or removed devices affect only the ports
designated through the Loop Initialization Primitive (LIP) propagation options.
Sample Stealth-3 Topologies
Stealth-3 Mode allows you to segment private loops, mix switch-attached and loop
devices, and cascade switches in a star configuration.
Sample Stealth-3 Topologies 27
Configuring the Switch and Its Ports 29
Understanding Stealth-3 Settings 31