8
LOBE ACCESS UNIT
2.1 Description
The Lobe Access Units are lobe extenders that
quadruple the lobe capacity of the standard Token
Ring MAU. The Lobe Access Unit increases the
flexibility of the Token Ring network by enabling its
topology to be expanded in a more cost-effective way.
It is especially designed to eliminate the need for an
additional MAU in situations where extra lobes are
needed. By using Lobe Access Units to add
workstations to the ring in place of extra lobe
cabling, overall design costs are reduced.
Connect four workstations to a single lobe with the
Lobe Access Unit. Or, an internal switch enables the
Lobe Access Unit to operate as a standalone access
unit. (See Figure 2-1.)
The LT0009A has five ports, each using DB9
connectors. The MAIN port is female, and the four
sub-ports are male. The LT0009A-UTP also has five
ports, but these use RJ-45 connectors. All five ports
are female.
2. Introduction