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Chapter 6 Broadband
VMG4381-B10A User’s Guide
81
6.2.1
Add/Edit Internet Connection
Click
Add new WAN Interface
in the
Broadband
screen or the
Edit
icon next to an existing WAN
interface to configure a WAN connection. The screen varies depending on the interface type, mode,
encapsulation, and IPv6/IPv4 mode you select.
6.2.1.1
Routing Mode
Use
Routing
mode if your ISP give you one IP address only and you want multiple computers to
share an Internet account.
The following example screen displays when you select the
ADSL over ATM
connection type,
Routing
mode, and
PPPoE
encapsulation. The screen varies when you select other interface type,
encapsulation, and IPv6/IPv4 mode.
Figure 23
Routing Mode
The following table describes the labels in this screen.
Table 8
Routing Mode
LABEL
DESCRIPTION
General
Active
Select this to activate the WAN configuration settings.
Name
Specify a descriptive name for this connection.
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82
Type
Select whether it is
ADSL/VDSL over PTM
,
ADSL over ATM
, or
Ethernet
connection.
ADSL/VDSL over PTM
: The Device uses the VDSL technology for data transmission
over the DSL port.
ADSL over ATM
: The Device uses the ADSL technology for data transmission over the
DSL port.
Ethernet
: The Device transmits data over the Ethernet WAN port. Select this if you have
a DSL router or modem in your network already.
Mode
Select
Routing
if your ISP give you one IP address only and you want multiple computers to
share an Internet account.
Encapsulation
Select the method of encapsulation used by your ISP from the drop-down list box. This
option is available only when you select
Routing
in the
Mode
field.
PPP over Ethernet (PPPoE)
: PPPoE (Point to Point Protocol over Ethernet) provides
access control and billing functionality in a manner similar to dial-up services using PPP.
Select this if you have a username and password for Internet access.
IP over Ethernet (IPoE)
: In this type of Internet connection, IP packets are routed
between the Ethernet interface and the WAN interface and then formatted so that they
can be understood in a bridged environment.
PPP over ATM (PPPoA)
: PPPoA allows just one PPPoA connection over a PVC.
IP over ATM (IPoA)
: IPoA allows just one RFC 1483 routing connection over a PVC.
If your connection type is
ADSL/VDSL over PTM
or
Ethernet
, the choices are
PPPoE
and
IPoE
.
If your connection type is
ADSL over ATM
, the choices are
PPPoE
,
PPPoA
,
IPoE
and
IPoA
.
IPv6/IPv4 Mode
Select
IPv4 Only
if you want the Device to run IPv4 only.
Select
IPv6/IPv4 DualStack
to allow the Device to run IPv4 and IPv6 at the same time.
Select
IPv6 Only
if you want the Device to run IPv6 only.
ATM PVC Configuration (These fields appear when the
Type
is set to
ADSL over ATM
.)
VPI
The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.
VCI
The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local management of ATM
traffic). Enter the VCI assigned to you.
DSL Link Type
This field is not editable. The selection depends on the setting in the
Encapsulation
field.
EoA
(Ethernet over ATM) uses an Ethernet header in the packet, so that you can have
multiple services/connections over one PVC. You can set each connection to have its own
MAC address or all connections share one MAC address but use different VLAN IDs for
different services. EoA supports ENET ENCAP (IPoE), PPPoE and RFC1483/2684 bridging
encapsulation methods.
PPPoA
(PPP over ATM) allows just one PPPoA connection over a PVC.
IPoA
(IP over ATM) allows just one RFC 1483 routing connection over a PVC.
Table 8
Routing Mode (continued)
LABEL
DESCRIPTION
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Chapter 6 Broadband
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83
Encapsulation
Mode
Select the method of multiplexing used by your ISP from the drop-down list box. Choices
are:
LLC/SNAP-BRIDGING:
In LCC encapsulation, bridged PDUs are encapsulated by
identifying the type of the bridged media in the SNAP header. This is available only when
you select
IPoE
or
PPPoE
in the
Select DSL Link Type
field.
VC/MUX:
In VC multiplexing, each protocol is carried on a single ATM virtual circuit
(VC). To transport multiple protocols, the Device needs separate VCs. There is a binding
between a VC and the type of the network protocol carried on the VC. This reduces
payload overhead since there is no need to carry protocol information in each Protocol
Data Unit (PDU) payload.
LLC/ENCAPSULATION:
More than one protocol can be carried over the same VC. This
is available only when you select
PPPoA
in the
Encapsulation
field.
LLC/SNAP-ROUTING:
In LCC encapsulation, an IEEE 802.2 Logical Link Control (LLC)
header is prefixed to each routed PDU to identify the PDUs. The LCC header can be
followed by an IEEE 802.1a SubNetwork Attachment Point (SNAP) header. This is
available only when you select
IPoA
in the
Encapsulation
field.
Service
Category
Select
UBR Without PCR
or
UBR With PCR
for applications that are non-time sensitive,
such as e-mail.
Select
CBR
(Continuous Bit Rate) to specify fixed (always-on) bandwidth for voice or data
traffic.
Select
Non Realtime VBR
(non real-time Variable Bit Rate) for connections that do not
require closely controlled delay and delay variation.
Select
Realtime VBR
(real-time Variable Bit Rate) for applications with bursty connections
that require closely controlled delay and delay variation.
Peak Cell Rate
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell Rate
(PCR). This is the maximum rate at which the sender can send cells. Type the PCR here.This
field is not available when you select
UBR Without PCR
.
Sustainable
Cell Rate
The Sustainable Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. Note that system default is 0
cells/sec.
This field is available only when you select
Non Realtime VBR
or
Realtime VBR
.
Maximum Burst
Size
Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent at the
peak rate. Type the MBS, which is less than 65535.
This field is available only when you select
Non Realtime VBR
or
Realtime VBR
.
PPP
Information
This is available only when you select
PPPoE
or
PPPoA
in the
Mode
field.
PPP User Name
Enter the user name exactly as your ISP assigned. If assigned a name in the form
user@domain
where domain identifies a service name, then enter both components exactly
as given.
PPP Password
Enter the password associated with the user name above.
PPP Auto
Connect
Select this option if you do not want the connection to time out.
IDLE Timeout
This value specifies the time in minutes that elapses before the router automatically
disconnects from the PPPoE server.
This field is not configurable if you select
PPP Auto Connect
.
PPPoE Service
Name
Enter the name of your PPPoE service here.
Table 8
Routing Mode (continued)
LABEL
DESCRIPTION
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Chapter 6 Broadband
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84
PPPoE
Passthrough
This field is available when you select
PPPoE
encapsulation.
In addition to the Device’s built-in PPPoE client, you can enable PPPoE pass through to allow
up to ten hosts on the LAN to use PPPoE client software on their computers to connect to the
ISP via the Device. Each host can have a separate account and a public WAN IP address.
PPPoE pass through is an alternative to NAT for application where NAT is not appropriate.
Disable PPPoE pass through if you do not need to allow hosts on the LAN to use PPPoE client
software on their computers to connect to the ISP.
IP Address
This is available only when you select
IPv4 Only
or
IPv6/IPv4 DualStack
in the
IPv6/
IPv4 Mode
field.
Obtain an IP
Address
Automatically
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is not fixed;
the ISP assigns you a different one each time you connect to the Internet. Select this if you
have a dynamic IP address.
Static IP
Address
Select this option If the ISP assigned a fixed IP address.
IP Address
Enter the static IP address provided by your ISP.
Subnet
Mask
Enter the subnet mask provided by your ISP.
Gateway IP
Address
Enter the gateway IP address provided by your ISP.
Routing Feature
This is available only when you select
IPv4 Only
or
IPv6/IPv4 DualStack
in the
IPv6/
IPv4 Mode
field.
NAT Enable
Select this option to activate NAT on this connection.
IGMP Proxy
Enable
Internet Group Multicast Protocol (IGMP) is a network-layer protocol used to establish
membership in a Multicast group - it is not used to carry user data.
Select this option to have the Device act as an IGMP proxy on this connection. This allows
the Device to get subscribing information and maintain a joined member list for each
multicast group. It can reduce multicast traffic significantly.
Apply as
Default
Gateway
Select this option to have the Device use the WAN interface of this connection as the system
default gateway.
DNS Server
This is available only when you select
IPv4 Only
or
IPv6/IPv4 DualStack
in the
IPv6/
IPv4 Mode
field.
DNS
Select
Dynamic
if you want the Device use the DNS server addresses assigned by your ISP.
Select
Static
if you want the Device use the DNS server addresses you configure manually.
DNS Server 1
Enter the first DNS server address assigned by the ISP.
DNS Server 2
Enter the second DNS server address assigned by the ISP.
IPv6 Address
This is available only when you select
IPv6/IPv4 DualStack
or
IPv6 Only
in the
IPv6/
IPv4 Mode
field.
IPv6 Address
Select
Automatic
if you want to have the Device use the IPv6 prefix from the connected
router’s Router Advertisement (RA) to generate an IPv6 address.
Select the
Get IPv6 Address From DHCPv6 Server
checkbox if you want to obtain an
IPv6 address from a DHCPv6 server. The IP address assigned by a DHCPv6 server has
priority over the IP address automatically generated by the Device using the IPv6 prefix
from an RA. This option is available only when you choose to get your IPv6 address
automatically.
Select
Static
if you have a fixed IPv6 address assigned by your ISP.
WAN IPv6
Address
Enter the IPv6 address assigned by your ISP.
Table 8
Routing Mode (continued)
LABEL
DESCRIPTION
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85
Prefix
Length
Enter the address prefix length to specify how many most significant bits in an IPv6 address
compose the network address.
Next Hop
Enter the IP address of the next-hop gateway. The gateway is a router or switch on the
same segment as your Device's interface(s). The gateway helps forward packets to their
destinations.
IPv6 Routing
Feature
You can enable IPv6 routing features in the following section.
MLD Proxy
Enable
Select this checkbox to have the Device act as an MLD proxy on this connection. This allows
the Device to get subscription information and maintain a joined member list for each
multicast group. It can reduce multicast traffic significantly.
Apply as
Default
Gateway
Select this option to have the Device use the WAN interface of this connection as the system
default gateway.
IPv6 DNS
Server
Configure the IPv6 DNS server in the following section.
IPv6 DNS
Select
Dynamic
to have the Device get the IPv6 DNS server addresses from the ISP
automatically.
Select
Static
to have the Device use the IPv6 DNS server addresses you configure
manually.
IPv6 DNS
Server 1
Enter the first IPv6 DNS server address assigned by the ISP.
IPv6 DNS
Server 2
Enter the second IPv6 DNS server address assigned by the ISP.
Tunnel
The IPv6 rapid deployment fields display when you set the
IPv6/IPv4 Mode
field to
IPv4
Only
. See
IPv6 Rapid Deployment on page 78
for more information.
Enable 6RD
Enable IPv6 rapid deployment to tunnel IPv6 traffic from the local network through the ISP’s
IPv4 network.
6RD Type
Select
Static
if you have the IPv4 address of the relay server, otherwise select
DHCP
to
have the Device detect it automatically through DHCP.
6RD Border
Relay
Server IP
When you set the
6RD Type
to
Static
, specify the relay server IPv4 address.
6RD IPv6
Prefix
Enter an IPv6 prefix for tunneling IPv6 traffic to the ISP’s Border Relay router and
connecting to the native IPv6 Internet.
Tunnel
The Dual Stack Lite fields display when you set the
IPv6/IPv4 Mode
field to
IPv6 Only
.
Enable Dual Stack Lite to let local computers use IPv4 through an ISP’s IPv6 network. See
Dual Stack Lite on page 78
for more information.
Enable DS-
Lite
Enable Dual Stack Lite to let local computers use IPv4 through an ISP’s IPv6 network.
DS-Lite
Relay
Server IP
Specify the transition router’s IPv6 address.
VLAN
These fields appear when the
Type
is set to
ADSL/VDSL over PTM
.
Active
Select this option to add the VLAN tag (specified below) to the outgoing traffic through this
connection.
802.1p
IEEE 802.1p defines up to 8 separate traffic types by inserting a tag into a MAC-layer frame
that contains bits to define class of service.
Select the IEEE 802.1p priority level (from 0 to 7) to add to traffic through this connection.
The greater the number, the higher the priority level.
802.1q
Type the VLAN ID number (from 1 to 4094) for traffic through this connection.
Table 8
Routing Mode (continued)
LABEL
DESCRIPTION

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