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Page 61 / 404 Scroll up to view Page 56 - 60
Chapter 5 Broadband
VMG8324-B10A / VMG8324-B30A Series User’s Guide
61
5.4
The Advanced Screen
Use the
Advanced
screen to enable or disable ADSL over PTM, Annex M, DSL PhyR, and SRA
(Seamless Rate Adaption) functions. The Device supports the PhyR retransmission scheme. PhyR is
a retransmission scheme designed to provide protection against noise on the DSL line. It improves
voice, video and data transmission resilience by utilizing a retransmission buffer.
Click
Network Setting > Broadband
>
Advanced
to display the following screen.
Figure 28
Network Setting
>
Broadband > Advanced
The following table describes the labels in this screen.
Mail Server
Select a mail server for the e-mail address specified below.
If you do not select a mail server, e-mail notifications cannot be sent via e-mail. You must
have configured a mail server already in the
Maintenance
>
Email Notification
screen.
Over Budget
Email Title
Type a title that you want to be in the subject line of the e-mail notifications that the Device
sends.
Send
Notification to
Email
Notifications are sent to the e-mail address specified in this field. If this field is left blank,
notifications cannot be sent via e-mail.
Interval
Enter the interval of how many minutes you want the Device to e-mail you.
Enable Log
Select this to activate the logging function at the interval you set in this field.
Basic
Click this to hide the advanced settings of 3G backup.
Apply
Click
Apply
to save your changes back to the Device.
Cancel
Click
Cancel
to return to the previous configuration.
Table 10
Network Setting
>
Broadband > 3G Backup (continued)
LABEL
DESCRIPTION
Table 11
Network Setting
>
Network Setting > Broadband
LABEL
DESCRIPTION
ADSL over PTM
Select
Enable
to use ADSL over PTM. Since PTM has less overhead than ATM, some ISPs
use ADSL over PTM for better performance.
Annex M
You can enable
Annex M
for the Device to use double upstream mode to increase the
maximum upstream transfer rate.
PhyR US
Enable or disable
PhyR US
(upstream) for upstream transmission to the WAN. PhyR US
should be enabled if data being transmitted upstream is sensitive to noise. However,
enabling PhyR US can decrease the US line rate. Enabling or disabling PhyR will require the
CPE to retrain. For PhyR to function, the DSLAM must also support PhyR and have it
enabled.
Page 62 / 404
Chapter 5 Broadband
VMG8324-B10A / VMG8324-B30A Series User’s Guide
62
5.5
The 802.1x Screen
You can view and configure the 802.1X authentication settings in the
802.1x
screen. Click
Network Setting
>
Broadband
>
802.1x
to display the following screen.
Figure 29
Network Setting > Broadband > 802.1x
The following table describes the labels in this screen.
PhyR DS
Enable or disable
PhyR DS
(downstream) for downstream transmission from the WAN.
PhyR DS should be enabled if data being transmitted downstream is sensitive to noise.
However, enabling PhyR DS can decrease the DS line rate. Enabling or disabling PhyR will
require the CPE to retrain. For PhyR to function, the DSLAM must also support PhyR and
have it enabled.
SRA
Enable or disable Seamless Rate Adaption (SRA). Select
Enable
to have the Device
automatically adjust the connection’s data rate according to line conditions without
interrupting service.
Apply
Click
Apply
to save your changes back to the Device.
Cancel
Click
Cancel
to return to the previous configuration.
Table 11
Network Setting
>
Network Setting > Broadband (continued)
LABEL
DESCRIPTION
Table 12
Network Setting > Network Setting > 802.1x
LABEL
DESCRIPTION
#
This is the index number of the entry.
Status
This field displays whether the authentication is active or not. A yellow bulb signifies that
this authentication is active. A gray bulb signifies that this authentication is not active.
Interface
This is the interface that uses the authentication. This displays
N/A
when there is no
interface assigned.
EAP Identity
This shows the EAP identity of the authentication. This displays
N/A
when there is no EAP
identity assigned.
EAP method
This shows the EAP method used in the authentication. This displays
N/A
when there is no
EAP method assigned.
Bidirectional
Authentication
This shows whether bidirectional authentication is allowed.
Certificate
This shows the certificate used for this authentication. This displays
N/A
when there is no
certificate assigned.
Trusted CA
This shows the Trusted CA used for this authentication. This displays
N/A
when there is no
Trusted CA assigned.
Apply
Click
Apply
to save your changes back to the Device.
Cancel
Click
Cancel
to return to the previous configuration.
Page 63 / 404
Chapter 5 Broadband
VMG8324-B10A / VMG8324-B30A Series User’s Guide
63
5.5.1
Edit 802.1X Settings
Use this screen to edit 802.1X authentication settings. Click the
Edit
icon next to the rule you want
to edit. The screen shown next appears.
Figure 30
Network Setting
>
Broadband > 802.1x: Edit
The following table describes the labels in this screen.
5.6
The WAN Status Screen
Click
Network Setting
>
Broadband
>
Wan Status
to open this
screen. Use this screen to query
and view the historical traffic transmission rate for a WAN interface in a bar chart.
N/A
displays if
the specified WAN interface was disconnected at that time.
Table 13
Network Setting
>
Broadband > 802.1x: Edit
LABEL
DESCRIPTION
Active
This field allows you to activate/deactivate the authentication.
Select this to enable the authentication. Clear this to disable this authentication without
having to delete the entry.
Interface
Select an interface to which the authentication applies.
EAP Identity
Enter the EAP identity of the authentication.
EAP method
This is the EAP method used for this authentication.
Enable
Bidirectional
Authentication
Select this to allow bidirectional authentication.
Certificate
Select the certificate you want to assign to the authentication. You need to import the
certificate in the
Security
>
Certificates
>
Local Certificates
screen.
Trusted CA
Select the Trusted CA you want to assign to the authentication. You need to import the
certificate in the
Security
>
Certificates
>
Trusted CA
screen.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to exit this screen without saving.
Page 64 / 404
Chapter 5 Broadband
VMG8324-B10A / VMG8324-B30A Series User’s Guide
64
Figure 31
Network Setting > Broadband > Wan Status
The following table describes the labels in this screen.
5.7
Technical Reference
The following section contains additional technical information about the Device features described
in this chapter.
Encapsulation
Be sure to use the encapsulation method required by your ISP. The Device can work in bridge mode
or routing mode. When the Device is in routing mode, it supports the following methods.
IP over Ethernet
IP over Ethernet (IPoE) is an alternative to PPPoE. IP packets are being delivered across an
Ethernet network, without using PPP encapsulation. They are routed between the Ethernet interface
Table 14
Network Setting > Broadband > Wan Status
LABEL
DESCRIPTION
Interface
Select a WAN interface to see its historical traffic transmission rate in the chart.
Direction
Select
RX
or
TX
to display received traffic only or transmitted traffic only in the chart.
Time Interval
Select the time periods to display in the chart. Available choices are
Minute
,
Day
, and
Month
.
Scan
Click this to update the chart according to your selected criteria.
Page 65 / 404
Chapter 5 Broadband
VMG8324-B10A / VMG8324-B30A Series User’s Guide
65
and the WAN interface and then formatted so that they can be understood in a bridged
environment. For instance, it encapsulates routed Ethernet frames into bridged Ethernet cells.
PPP over ATM (PPPoA)
PPPoA stands for Point to Point Protocol over ATM Adaptation Layer 5 (AAL5). A PPPoA connection
functions like a dial-up Internet connection. The Device encapsulates the PPP session based on
RFC1483 and sends it through an ATM PVC (Permanent Virtual Circuit) to the Internet Service
Provider’s (ISP) DSLAM (digital access multiplexer). Please refer to RFC 2364 for more information
on PPPoA. Refer to RFC 1661 for more information on PPP.
PPP over Ethernet (PPPoE)
Point-to-Point Protocol over Ethernet (PPPoE) provides access control and billing functionality in a
manner similar to dial-up services using PPP. PPPoE is an IETF standard (RFC 2516) specifying how
a personal computer (PC) interacts with a broadband modem (DSL, cable, wireless, etc.)
connection.
For the service provider, PPPoE offers an access and authentication method that works with existing
access control systems (for example RADIUS).
One of the benefits of PPPoE is the ability to let you access one of multiple network services, a
function known as dynamic service selection. This enables the service provider to easily create and
offer new IP services for individuals.
Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no
specific configuration of the broadband modem at the customer site.
By implementing PPPoE directly on the Device (rather than individual computers), the computers on
the LAN do not need PPPoE software installed, since the Device does that part of the task.
Furthermore, with NAT, all of the LANs’ computers will have access.
RFC 1483
RFC 1483 describes two methods for Multiprotocol Encapsulation over ATM Adaptation Layer 5
(AAL5). The first method allows multiplexing of multiple protocols over a single ATM virtual circuit
(LLC-based multiplexing) and the second method assumes that each protocol is carried over a
separate ATM virtual circuit (VC-based multiplexing). Please refer to RFC 1483 for more detailed
information.
Multiplexing
There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be sure to
use the multiplexing method required by your ISP.
VC-based Multiplexing
In this case, by prior mutual agreement, each protocol is assigned to a specific virtual circuit; for
example, VC1 carries IP, etc. VC-based multiplexing may be dominant in environments where
dynamic creation of large numbers of ATM VCs is fast and economical.
LLC-based Multiplexing

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