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Subtending Multiple Systems
Star Management
In a star configuration, you can attach up to three systems (subtended systems) directly to the
one system that connects on the edge of the network (subtending system). The subtending
system aggregates the traffic from the subtended systems, switches all the traffic (its own and
that of the subtended systems), and provides the network uplink. Features of this management
approach include:
•
shorter segment costs rather than the longer length cost of a daisy chain
•
more cost effective than running fiber optic cable to new areas or to areas with a small
number of subscribers
Each system, whether subtending or subtended, can connect to and manage subscriber traffic
(modems).
"Star Physical Implementation" on page 48
Avidia systems.
"Star Configuration" on page 50
implement the appropriate connections.
Star Physical Implementation
The relationship of subtending in a star configuration is shown in the following figure.
The example shows an OC3 interface as the network uplink for the entire subtended system. An
AV8000 or AV3000 is the subtending system. Three chassis are subtended and are at three
separate physical locations (sites). The subtending connection is through a DS1 link.
Subtended
Avidia 8000/3000/2200
Site B
Subtended
Avidia 8000/3000/2200
Site C
48
shows how to set up a star configuration using
shows how to configure the system to
Subtending
Avidia 8000/3000
DS1
DS1
Avidia System Configuration and Management User Manual
Subtended
Avidia 8000/3000/2200
DS1
ATM
OC3
Switch
Integrated
Access
Server
Site A
Internet
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