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1740 SHDSL 2/4-Wire Router User’s Guide
3.4.4 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 virtual 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.
26 September 2004 1740-A2-GB20-10