Intel 100BASE-T4 manual Stacking Hubs, A P T E R 2 Installing the Express Hub

C H A P T E R 2 Installing the Express Hub

NOTE

If you include Intel Express 100BASE-TX and 100BASE-T4 Stackable Hubs in the same stack, make sure you attach only the appropriate devices (TX or T4) to each type of hub.

NOTE

Use Intel cascade cables to connect Express Stackable Hubs. Do not use UTP cabling to connect hubs.

Stacking Hubs

You can install a maximum of six hubs in an equipment rack or on a shelf or a table. Once the hubs are stacked and secured, connect them using Intel cascade cables. The cascade cable is a unique cable for Express Stackable Hubs.

If you install an optional Network Management Module (NMM), it assigns unit numbers starting from the top of the stack. Position the hub you want to designate number 1 at the top of the stack.

Notes on cascading

A stack of hubs functions as a single repeater or collision domain. The cascade cables form a cascade bus that carries the following information to each hub in the stack:

•Stack management information that allows one NMM to manage every hub in a stack.

•Port statistics that distribute configuration and status information for each port in the stack to an NMM and network management system.

•Daisy chain unit number information that 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.

•Network data.

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