Specifications

A.9 FDDI in the Hub Backplane
A–12 FDDI Configuration Capabilities
Figure A–8 Ring Building Blocks
A.9.3 Tree Building Blocks
The five tree building blocks, see Figure A–9, are as follows:
Name Description
Nonroot MS Ports M and S connect to the DEChub 900 backplane or
to the DEChub ONE-MX ModPMDs.
Nonroot M Port M connects to the DEChub 900 backplane or to the
DEChub ONE-MX ModPMD. Port S connects to the
FDDI network module front panel port.
Nonroot SAC Ports M and S connect to the FDDI network module front
panel ports.
Nonroot S Port S connects to the DEChub 900 backplane or to the
DEChub ONE-MX ModPMD. Port M connects to the
FDDI network module front panel port.
Root Primary Ports A and B connect to the FDDI network module front
panel ports. Port M connects to the DEChub 900
backplane or to the DEChub ONE-MX ModPMD.
Front Panel Ports
LKG-10070-96F
ABAB
BBAA
Backplane Ports
Trunk B
Trunk AB Trunk A
Stump
Primary