- 4 - 3 Rule - Cabletron Systems 3E02-04 User Manual

Appendix B: Cables
Table B-10 AUI Pin Assignments (Continued)
Pin
14
Shell
Voltage Plus (VP) and Voltage Common (VC) use a single
NOTE
twisted-pair in the AUI cable.
B.5 5 - 4 - 3 RULE
Between any two nodes (i.e., PCs or other stations) on the network, there
may be:
• Up to 5 segments in series
• Up to 4 repeaters or multi-port hubs
• Up to 3 populated segments (that is, segments attached to two or more
PCs).*
* The remaining two segments are unpopulated; these are known as
inter-repeater links or IRLs. This distinction between populated and
unpopulated segments is significant for coax networks only.
This rule completely consistent with the IEEE 802.3
NOTE
specification, and is meant only to summarize the configuration
specification.
Page B-6
Circuit Signal Name
VS Voltage Shield
Protective Ground
PG
(Conductive Shell)
Ethernet Switch Module User Guide