Specifications

A.10 Default Configurations
A–14 FDDI Configuration Capabilities
A.10 Default Configurations
This section describes the default (or factory set) configurations that apply to the
FDDI network modules. Note that the default settings vary according to module
type, and whether the module is installed into a DEChub 900 MultiSwitch, DEChub
ONE or DEChub ONE-MX docking station.
A.10.1 FDDI Network Modules in a DEChub 900
When FDDI network modules (DECconcentrator 900MX, DECconcentrator 900FH,
DECconcentrator 900TH, and DECswitch 900EF) are installed into a DEChub 900
MultiSwitch, the default configuration is as follows:
• All front panel ports are active.
• The A and B ports connect to the module’s front panel ports.
This means that no redirection to backplane ports or backplane connections is made
between FDDI network modules unless the network manager chooses to do so.
The network manager can issue the appropriate MultiChassis Manager commands to
establish FDDI networks across the backplane of the DEChub 900 MultiSwitch.
While the default for the PEswitch 900TX is to the backplane ports, no FDDI LAN
connections across the DEChub 900 backplane are made by default. The network
manager must issue the appropriate MultiChassis Manager commands to connect a
PEswitch 900TX to a FDDI backplane LAN.
A.10.2 FDDI Network Modules in a DEChub ONE or DEChub ONE-MX
When FDDI network modules (DECconcentrator 900MX, DECconcentrator 900FH,
DECconcentrator 900TH, and DECswitch 900EF) are installed into a DEChub ONE
or into a DEChub ONE-MX, the default configuration is as follows:
• All front panel ports are active.
• The A and B ports connect to the module’s front panel ports.
PEswitch 900TX:
The default configuration for the PEswitch 900TX is as follows:
• The A port and B port connect to the DEChub ONE-MX ModPMD ports.
No FDDI connections are available when the PEswitch 900TX is installed to a
DEChub ONE (see Note).