4 Ports ADSL2/2+ Router
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Authentication:
The different types of available authentications are:
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Auto:
When auto is selected, PAP mode will run by default. However, if PAP fails,
then will run as the secondary protocol. This is the default setting.
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PAP:
Password Authentication Procedure. Authentication is done through username
and password.
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CHAP:
Challenge-Handshake Authentication Protocol. Typically more secure than
PAP, CHAP uses username and password in combination with a randomly generated
challenge string which has to be authenticated using a one-way hashing function.
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MTU:
Maximum Transmission Unit. The largest size packet that can be sent by the modem.
If the network stack of any packet is larger than the MTU value, then the packet will be
fragmented before the transmission. This can be set from a minimum 128 to maximum 1500.
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On Demand:
If enable On Demand mode, the connection will be dropped if no activity is
detected after the specified Idle Timeout value.
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Default Gateway:
Check box to make this the default connection.
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Enforce MTU:
Check box if you experience problems accessing the Internet over a PPPoE
connection. This feature will force all TCP traffic to conform with PPP MTU by changing TCP
Maximum Segment Size to PPP MTU. MTU (Maximum Transmission Unit) is defined as the
maximum packet size (In bytes), that a particular interface can handle.
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Debug:
Click to enable the PPP connection debugging facilities.
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PPP Unnumbered:
Click to enable PPP Unnumbered function then select LAN Group from
the LAN dropdown manual.
PVC Settings:
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PVC:
This field allows you to choose the specific PVC for the PPP session.
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VPI:
Virtual Path Identifier is a virtual path used for cell routing that is identified by an eight bit
field in the ATM cell header. The VPI field specifies this eight bit identifier for routing.
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VCI:
A Virtual Channel Identifier is a virtual channel that is identified by a unique numerical
tag that is defined by a 16-bit field in the ATM cell header. The purpose of the virtual channel
is to identify where the cell should travel. The VCI field specifies this 16 bit numerical tag that
determines the destination.
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QoS:
Select the Quality of Service (QoS) type. If in doubt leave as default.
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PCR:
Peak Cell Rate. This is an ATM (Asynchronous Transfer Mode) term to describe the
rate cells per second that the source device may never exceed. Available only when VBR
QoS is chosen.
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SCR:
Security Cell Rate. This is an ATM (Asynchronous Transfer Mode) term to describe the
security cell transmitted per second.
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MBS:
Maximum Burst Size. A term used in ATM (Asynchronous Transfer Mode) to specify
the maximum number of cells which can be transmitted at the contracted PCR (Peak Cell
Rate). Available only when VBR QoS is chosen.
