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C H A P T E R 1 Intel Express 100BASE-TX Stackable Hub
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The cascade cable extends the functionality of one hub to a maximum
of six hubs in a stack. This stack then functions as a single repeater or
collision domain. The cascade cable daisy chain creates a cascade bus
that carries the following information to each hub in the stack:
• Multidrop repeater Ethernet segment information—allows you to
have a total of 72 fixed ports on one segment. When the optional
100BASE-T host module is installed in the expansion slot on each
hub, the Ethernet segment supports up to 144 ports.
• Stack management information—allows one NMM to manage
every hub in the stack.
• Port statistics—distributes configuration and status information
for each port in the stack to an NMM and network management
system.
• Daisy chain unit number information—provides a sequential
numbering convention for a stack of up to six hubs. For
information about the unit numbering convention, see “Unit
Numbering Convention” in Chapter 3, “Physical Configuration
Guidelines.”