User guide

EDA System Services
1/1551-HSC 901 35/3 Uen C 2005-12-02
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Figure 30 on page 41 depicts a traditional access network scenario, where
a BRAS controls what End-users can access. The aggregation network in
itself imposes no constraints, but only transport all the End-user traffic to
and from the BRAS.
IP Network
Aggregation
network
BRAS
Application
Server
Application
Server
Access
Node
Access
Node
Access
Node
Local loop
Figure 30 Traditional BRAS Controlled Access
Figure 31 on page 41 illustrates a multiple edge access network scenario.
In this scenario it is the access nodes and aggregation network that must
impose the restrictions on the End-user traffic.
IP Network
Aggregation
network
Gateway
Access
Node
Access
Node
Access
Node
Local loop
Application
Server
Application
Server
Figure 31 Multiple Edge Access