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Chapter 12 WAN
NBG-419N User’s Guide
116
12.4.4
L2TP Encapsulation
The Layer 2 Tunneling Protocol (L2TP) works at layer 2 (the data link layer) to tunnel network traffic
between two peer devices over another network (like the Internet).
This screen displays when you select
L2TP
encapsulation.
Figure 83
Network > WAN > Internet Connection: L2TP Encapsulation
The following table describes the labels in this screen.
Table 50
Network > WAN > Internet Connection: L2TP Encapsulation
LABEL
DESCRIPTION
ISP Parameters for Internet Access
Connection Type
To configure a L2TP client, you must configure the
User Name
and
Password
fields for a layer-2 connection and the L2TP parameters for an
L2TP connection.
User Name
Type the user name given to you by your ISP.
Password
Type the password associated with the User Name above.
Retype to Confirm
Type your password again to make sure that you have entered is correctly.
L2TP Configuration
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12.5
Advanced WAN Screen
Use this screen to enable
Multicast
and enable
Auto-bridge
.
Note: The categories shown in this screen are independent of each other.
Server IP Address
Type the IP address of the L2TP server.
Get automatically
from ISP
Select this option If your ISP did not assign you a fixed IP address. This is
the default selection.
Use Fixed IP Address
Select this option If the ISP assigned a fixed IP address.
IP Address
Enter your WAN IP address in this field if you selected
Use Fixed IP
Address
.
IP Subnet Mask
Your NBG-419N will automatically calculate the subnet mask based on the IP
address that you assign. Unless you are implementing subnetting, use the
subnet mask computed by the NBG-419N.
Gateway IP
Address
Enter a
Gateway IP Address
(if your ISP gave you one) in this field.
WAN IP Address Assignment
Get automatically
from ISP
Select this to get your WAN IP address from your ISP.
Use Fixed IP Address
Select this option If the ISP assigned a fixed IP address.
My WAN IP
Address
Enter your WAN IP address in this field if you selected
Use Fixed IP
Address
.
WAN DNS Assignment
First DNS Server
Second DNS Server
Select
From ISP
if your ISP dynamically assigns DNS server information
(and the NBG-419N's WAN IP address). The field to the right displays the
(read-only) DNS server IP address that the ISP assigns.
Select
User-Defined
if you have the IP address of a DNS server. Enter the
DNS server's IP address in the field to the right. If you chose
User-Defined
,
but leave the IP address set to 0.0.0.0,
User-Defined
changes to
None
after you click
Apply
. If you set a second choice to
User-Defined
, and
enter the same IP address, the second
User-Defined
changes to
None
after you click
Apply
.
Select
None
if you do not want to configure DNS servers. If you do not
configure a DNS server, you must know the IP address of a computer in
order to access it.
WAN MAC Address
The MAC address section allows users to configure the WAN port's MAC
address by either using the NBG-419N’s MAC address, copying the MAC
address from a computer on your LAN or manually entering a MAC address.
Factory default
Select
Factory default
to use the factory assigned default MAC Address.
Clone the computer’s
MAC address - IP
Address
Select
Clone the computer's MAC address - IP Address
and enter the IP
address of the computer on the LAN whose MAC you are cloning.
Set WAN MAC Address
Select this option and enter the MAC address you want to use.
Apply
Click
Apply
to save your changes back to the NBG-419N.
Reset
Click
Reset
to begin configuring this screen afresh.
Table 50
Network > WAN > Internet Connection: L2TP Encapsulation
LABEL
DESCRIPTION
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To change your NBG-419N’s advanced WAN settings, click
Network
>
WAN
>
Advanced
. The
screen appears as shown.
Figure 84
Network > WAN > Advanced
The following table describes the labels in this screen.
12.6
IGMP Snooping Screen
Use this screen to enable IGMP snooping if you have LAN users that subscribe to multicast services.
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership
in a multicast group - it is not used to carry user data.
Table 51
Network > WAN > Advanced
LABEL
DESCRIPTION
Multicast Setup
Multicast
Select
IGMPv1/v2
to enable multicasting. This applies to traffic routed
from the WAN to the LAN.
Select
None
to disable this feature. This may cause incoming traffic to be
dropped or sent to all connected network devices.
Auto-bridge
Enable Auto-bridge
mode
Select this option to have the NBG-419N switch to bridge mode
automatically when the NBG-419N gets a WAN IP address in the range of
192.168.x.y (where x and y are from zero to nine) no matter what the LAN
IP address is.
Apply
Click
Apply
to save your changes back to the NBG-419N.
Reset
Click
Reset
to begin configuring this screen afresh.
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Click
Network > WAN > IGMP Snooping
. The screen appears as shown.
Figure 85
Network > WAN > IGMP Snooping
The following table describes the labels in this screen.
Table 52
Network > WAN > IGMP Snooping
LABEL
DESCRIPTION
Auto-bridge
Enable IGMP Snooping
Select this option to have the NBG-419N use IGMP snooping.
Check the LAN port/s to which IGMP snooping applies.
Apply
Click
Apply
to save your changes back to the NBG-419N.
Reset
Click
Reset
to begin configuring this screen afresh.
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Chapter 12 WAN
NBG-419N User’s Guide
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