CTC Store IPDSLAM-A8/A16 Manuel D’Utilisation

 
 

                                                                 

 

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Figure 0-2    PPPoE application in ADSL IP DSLAM with Ethernet-All-The-Way 

Network 

 

In addition to traditional ATM-based ADSL network. As Fig 0-2 displays, the 

user application information is still encapsulated by ADSL CPE into ATM cells 
in pre-defined VC (Virtual Channel, PVC), and then upstream the ATM cells to 
DSLAM via ADSL link.   

In the ADSL IP DSLAM, all the ATM cells belong to the specified VC are 

decapsulated back to the original PPPoE encapsulated Ethernet packet (if 
VLAN-mode of the specified ADSL port is disabled), or mapped to the 
pre-defined Ethernet-VLAN packets (if VLAN-mode of the specified ADSL port 
is enabled). ADSL IP DSLAM concentrates all Ethernet-with/without VLAN-tag 
packets from 16 ports’ ADSL and uplinks to ISP’s Ethernet-All-The-Way 
network. The PPPoE frames will be resolved at Broadband Access Server 
(BAS), and the user application information was serviced. 

mode and router mode). For performance concern, ADSL IP DSLAM will not 
act as BRAS to process user application information directly.   

ADSL IP DSLAM provides Ethernet-with/without VLAN tag to ATM-PVC 

mapping feature for the ISP to isolate user’s data with security and to provide 
lots of service enhancement capabilities. ADSL IP DSLAM supports 2 ATM 
PVC links for each ADSL CPE.