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Router Role 

 
 

1/1553-HSC 901 86/1 Uen A   2006-02-21

 

5

 

3 Router 

Role 

The Router or BRAS plays an important role in the Shared DSL concept, 
and must perform the following functions: 

•  DHCP requests from the IP DSLAM in the remote site must be relayed 

towards the EDA network, using the management VLAN ID. 

•  The Management PVC from the remote site must be mapped to the 

EDA Management VLAN. 

•  If PPPoE or PPPoA is used for the END-user traffic, it must be 

terminated by the BRAS.  

•  If the Router (or BRAS) is not an Edge Node of the EDA network as 

well, a tunnel must be established to the EDN network (for example 
L2TP or another VPN solution, see Figure 2 on page 5). 

 

EDA

Network

Broadband

Network

Management

PVC

Management

VLAN

EDA

Network

Broadband

Network

Management

PVC

Tunnel

Primary

Access Provider

Secondary

Access Provider

Primary

Access Provider

Secondary

Access Provider

Management

VLAN