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Page 36 / 181 Scroll up to view Page 31 - 35
iConnect625W ADSL/ADSL2+ Router User Guide
36
The following table lists the
PPPoE Connection
Setup
page fields and describes each of
the options:
Field
Description
NAT
Network Address Translation
is a feature that enables you
to use private IP addresses on your computer or your LAN.
This is set to
Enabled
by default for standard operation.
Firewall
This is set to
Enabled
by default for standard operation.
Sharing
The following options are available:
•
Disable:
Disables connection sharing;
•
Enable:
Enables connection sharing;
•
VLAN:
The
VLAN ID
and
Priority Bits
fields are activated when
VLAN
is
selected, which enables you to create
VLAN.
VLAN ID
Multiple connections over the same PVC
are supported, which requires the WAN
network to have VLAN support and for the
DSLAMS and routers on the ISP to handle
VLAN Tags.
Extended support is also available, which
allows multiple connections to be placed
over the single PVC without VLAN support
(VLAN Tag of
0
in this special case). In
this mode of operation, a received packet
is flooded on all the connections that
reside over it.
VLAN Settings
Priority Bits
Priority is given to a VLAN connection
from
0-7.
All packets sent over the VLAN
connection have the priority bits set to the
configured level.
Each of the fields for
PPP Settings
is described as follows.
Username
Your user name for the PPPoE access
provided by your ISP. This field is
alphanumeric and the maximum limit is
64 characters. It cannot start with a
number.
PPP Settings
Password
Your password for the PPPoE access
provided by your ISP. This field is
alphanumeric and the maximum number
of characters allowed is 128 characters.
It cannot start with a number.
Page 37 / 181
iConnect625W ADSL/ADSL2+ Router User Guide
37
Field
Description
Idle Timeout
Specifies that the PPPoE connection
should disconnect if the link has no
activity detected for
n
seconds. This field
is in conjunction with the
On-Demand
feature and is enabled only when the
On
Demand
checkbox is checked. To
ensure that the link is always active,
enter a
0
in this field. You can also enter
a value larger than
10
(secs).
Keep Alive
When the
On Demand
option is not
enabled, this value specifies the time to
wait without being connected to your
provider before terminating the
connection. To ensure that the link is
always active, enter a
0
in this field. You
can also enter any positive integer
values into this field.
This defines the authentication protocol
for your ISP.
This is set to
Auto
by
default.
Auto
The authentication is
automatic.
CHAP
Stands for
Challenge
Handshake Authentication
Protocol.
Authentication
PAP
Stands for
Password
Authentication Protocol.
MTU
This is the
Maximum Transmission Unit
that the DSL connection can transmit. It
is a negotiated value that packets no
more than
n
bytes can be sent to the
service provider. The PPPoE interface
default is
1492 (max)
and PPPoA is
1500 (max).
The minimum MTU value is
64
.
On-Demand
If selected, this enables on-demand
connectivity to the Internet.
Your
Internet connection is activated when
traffic is generated from LAN clients.
The connection disconnects if no activity
is detected after the specified timeout
value. When checked, this field enables
the following fields:
•
Idle Timeout;
•
Host Trigger;
•
Valid Rx.
Default
Gateway
If checked, this WAN connection acts as
the default gateway to the Internet.
Page 38 / 181
iConnect625W ADSL/ADSL2+ Router User Guide
38
Field
Description
Enforce MTU
This feature is enabled by default. It
forces all TCP traffic to conform with the
PPP MTU by changing the TCP
maximum segment size to the PPP
MTU. If it is disabled, you may have
issues accessing some Internet sites.
Debug
Check this checkbox to enable PPPoE
connection debugging facilities.
PPP
Unnumbered
PPP Unnumbered
is a special feature. It
enables the ISP to designate a block of
public IP addresses to the customer
where it is statically assigned on the LAN
side. PPP Unnumbered is essentially like
a bridged connection.
Valid Rx
This field is used in conjunction with the
On-Demand feature and is enabled only
when the
On Demand
field is checked.
When the
On-Demand
feature is
enabled and
Valid Rx
is unchecked, only
packets going from the LAN side to the
WAN side keep the link active. After the
iConnect625W times out, no packets can
be received from the WAN side to the
LAN side.
If
Valid Rx
is checked, the incoming
packets can keep the PPPoE WAN
connection active. There is one
condition: these incoming packets
should belong to a connection initiated
from a LAN-side device.
Page 39 / 181
iConnect625W ADSL/ADSL2+ Router User Guide
39
Field
Description
Host Trigger
This field is used in conjunction with the
On-Demand feature and is enabled only
when the
On Demand
field is checked.
There are 3 types of packets:
•
LAN packets (Type 1):
packets
are generated by the
iConnect625W from the LAN to
the WAN.
•
Proxied packets (Type 2):
packets are generated by the
iConnect625W after receiving
packets from the LAN side, such
as DNS Proxy.
•
Locally generally packets (Type
3):
packets are generated by the
iConnect625W such as Voice,
SNMP, etc.
When the
On-Demand
feature is
enabled and
Host Trigger
is unchecked,
only the flow of
Type 1
packets keeps
the link active, i.e. if the iConnect625W
has not received
Type 1
packets for x
amount of time (as specified in the
Timeout
field), the connection times out.
If
Host Trigger
is checked,
Type 2
and
Type 3
packets can keep the link active
as well. You can configure the packets
using the
Trigger Traffic
page, which is
accessed by clicking the
Configure
button next to
Host Trigger
.
The following fields can be used to
identify the traffic of
Type 2
and/or
Type
3
packets that will keep the link alive:
•
Source Port
(the character * is
used to denote any port);
•
Destination Port
(the character *
is used to denote any port);
•
Protocol
(
TCP, UDP, ICMP
, or
Specify
the protocol number)
LAN
The
LAN
field is associated with the
PPP
Unnumbered
field and is enabled when
the latter field is checked. You can
specify the LAN group the packets need
to go to when the
PPP Unnumbered
feature is activated.
Page 40 / 181
iConnect625W ADSL/ADSL2+ Router User Guide
40
Field
Description
The
Permanent Virtual Circuit
is a fixed virtual circuit
between two users. It is the public data network equivalent
to a leased line. No call setup or clearing of procedures are
needed.
VPI
The VPI (Virtual Path Identifier) defines the
virtual path settings for the ADSL
connection between you and your ISP.
The VPI value entered here must be based
on the information provided by your ISP.
VCI
The VCI (Virtual Channel Identifier) defines
the virtual channel settings for the ADSL
connection between you and your ISP.
The VCI value entered here must be based
on the information provided by your ISP.
QoS is a characteristic of data transmission
that measures how accurately and how
quickly a message or data is transferred
from a source host to a destination host
over a network. The 3 QoS options are:
•
UBR, CBR and VBR
.
The QoS selected must be based on the
information provided by your ISP. This is
set to
UBR
by default.
UBR
UBR is the bandwidth
allocation service that does
not guarantee any throughput
levels and uses only available
bandwidth. UBR is often used
when transmitting data that
can tolerate delays.
PVC Settings
QoS
CBR
CBR is the bandwidth service
that requires the user to
determine a fixed bandwidth
requirement at the time the
connection is set up so that
the data can be sent in a
steady stream. CBR service is
often used when transmitting
fixed-rate uncompressed
video.

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