3Com 3C780 User Guide - Page 69

Configuring the Hub

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Configuring the Hub 3-1 Chapter 3 Configuring the Hub After you have installed the hub and its modules and physically connected it to the ring, you can configure the hub to operate in your network environment. This chapter discusses the following topics: s Attachment options supported by the hub s Default configuration of the hub and its modules s Console command access modes s Rules for media module port connections Attachment Options The LinkBuilder FDDI Workgroup Hub supports four types of standard configurations: s Dual attachment concentrator (DAC) s Single attachment concentrator (SAC) s Null attachment concentrator (NAC) s Dual homing (DH) NOTE: 3Com uses the standard acronyms shown above but calls the concentrator a hub. Each type of configuration is discussed in this section. (Refer to the section "Configuring Modules" later in this chapter for information about using the set attach command to configure the hub.)

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Chapter 3
Configuring the Hub
After you have installed the hub and its modules and physically connected it to
the ring, you can configure the hub to operate in your network environment.
This chapter discusses the following topics:
■
Attachment options supported by the hub
■
Default configuration of the hub and its modules
■
Console command access modes
■
Rules for media module port connections
Attachment Options
The LinkBuilder FDDI Workgroup Hub supports four types of standard
configurations:
■
Dual attachment concentrator (DAC)
■
Single attachment concentrator (SAC)
■
Null attachment concentrator (NAC)
■
Dual homing (DH)
NOTE:
3Com uses the standard acronyms shown above but calls the
concentrator a hub.
Each type of configuration is discussed in this section.
(Refer to the section
“Configuring Modules” later in this chapter for information about using the
set
attach
command to configure the hub.)