Zhone 1740 shdsl Manual Do Utilizador

3.2.4 PPPoA 

When a VC is configured for PPPoA, the router will auto-detect the Authentication code (PAP or CHAP), 
and the NAPT function will be enabled automatically. 

STEP 1: Click WAN Setup on the Basic menu bar. 

STEP 2: Enter values for the following fields: VPI, VCI, Encapsulation (LLC or VC MUX), Enable NAPT. 

VPI 

Enter a value for the vitual path identifier 

VCI  

Enter a value for the virtual channel identifier 

LLC Encapsulation: 

With LLC encapsulation, a link control header is added to the 
Ethernet packet that identifies the protocol type (Ethernet). This 
allows multiple protocols to be transmitted over the ATM Virtual 
Circuit. 

VC Multiplexing: 

With VC Multiplexing, no link control header is needed as the 
ATM Virtual Circuit is assumed to be carrying a single protocol. 

Enable NAPT 

Selecting Enabling NAPT will enable Network Port Address 
Translation on the WAN interface.  

Keepalive Interval(sec): 

Keep-alive is a networking operation that periodically checks 
the availability of a PPPoE/PPPoA connection between the CO 
and CPE. If the keep-alive message is not acknowledged, the 
connection will be interrupted.  

STEP 3: Click PPPoA, and type the user name and password that the remote subscriber needs for 

Internet access. 

STEP 4: Click on the Add button. The new VC is added in the Current ATM PVC List on the bottom 

screen. 

24                                                                                      July 2004                                                                 1740-A2-GB20-00