A-Link RoadRunner 21 Router
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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.
;
Default Gateway:
Check box to make this the default connection.
;
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.
;
Debug:
Click to enable the Debug function. The complete debugging information will show
and listed in the System Log file.
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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.
;
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.
;
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.
;
SCR:
Security Cell Rate. This is an ATM (Asynchronous Transfer Mode) term to describe the
security cell transmitted per second.
;
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.
;
CDVT:
Cell Delay Variation Time. The Cell Delay Variation is a term used in ATM
(Asynchronous Transfer Mode) to describe the time difference that is acceptable between
cells being presented at the receiving host. Available only when VBR QoS is chosen.
;
Auto PVC:
Click to enable Auto PVC features. Auto PVC allows detection of virtual channels
via the built-in mechanism for communicating ATM Layer information from DSLAM to the
A-Link RoadRunner 21 Router.
Connect:
Click
Connect
to attempt an ADSL connection under this connection profile.
Disconnect:
Click
Disconnect
to drop the ADSL connection under this connection profile.
Apply:
Click
Apply
to complete the connection profile’s setting.
Delete:
Click
Delete
to delete a connection.
Cancel:
Click
Cancel
to ignore all the changes.
To complete and save the connection profile, go to
TOOLS
Æ
System Commands
and click
Save All
after clicking the
Apply
button.
