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1740 SHDSL 2/4-Wire Router User’s Guide
3.4.3 PPPoE
When a VC is configured for PPPoE, the router will auto-detect the Authentication code (PAP or CHAP).
The NAPT and DHCP server functions will be enabled automatically.
STEP 1:
Click WAN Setup on the Basic menu bar and enter the following parameters to set up PPPoE.
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.
User Name/Password These two fields are used for remote subscriber to log on for
Internet access.
Mode Direct and Auto. If the mode is set to Auto, the PPPoE negotiation
automatically starts when the system identifies any traffic required
to be transferred on the link. When DIRECT is selected the PPPoE
negotiation is started manually.
Idle Timeout The Idle Time field defines the period of idle time after which the
PPPoE link will be terminated. It is functional in the auto mode.
The default setting is 5 minutes. In Direct mode, this function is not
used and the field displays zero.
Enable DHCP server Check the item to enable the DHCP server or uncheck it to disable
it.
Keepalive
Interval(sec):
Keep-alive is a networking operation that periodically (default-
every 10 seconds) 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.
24 September 2004 1740-A2-GB20-10