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Vigor2920 Series User’s Guide
76
To use
PPTP/L2TP
as the accessing protocol of the internet, please choose
PPTP/L2TP
from
Internet Access
menu. The following web page will be shown.
PPTP/L2TP Client
Mode
Enable PPTP-
Click this radio button to
enable a PPTP client to
establish a tunnel to a DSL modem on the WAN interface.
Enable L2TP
- Click this radio button to
enable a L2TP client to
establish a tunnel to a DSL modem on the WAN interface.
Disable
– Click this radio button to close the connection through
PPTP or L2TP.
Server Address
- Specify the IP address of the PPTP/L2TP
server if you enable PPTP/L2TP client mode.
Specify Gateway IP Address
– Specify the gateway IP address
for DHCP server.
ISP Access Setup
Username
-Type in the username provided by ISP in this field.
Password
-Type in the password provided by ISP in this field.
Index (1-15) in Schedule Setup -
You can type in four sets of time
schedule for your request. All the schedules can be set previously in
Application – Schedule
web page and you can use the number that
you have set in that web page.
MTU
It means Max Transmit Unit for packet. The default setting is
1442.
PPP Setup
PPP Authentication
- Select
PAP only
or
PAP or CHAP
for PPP.
Idle Timeout
- Set the timeout for breaking down the Internet after
passing through the time without any action.
IP Address
Assignment
Method(IPCP)
Fixed IP
- Usually ISP dynamically assigns IP address to you each
time you connect to it and request. In some case, your ISP provides
service to always assign you the same IP address whenever you
request. In this case, you can fill in this IP address in the Fixed IP
field. Please contact your ISP before you want to use this function.
Click
Yes
to use this function and type in a fixed IP address in the
box.
VoIPon
www.voipon.co.uk
sales@voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
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Vigor2920 Series User’s Guide
77
WAN IP Alias
- If you have multiple public IP addresses and would
like to utilize them on the WAN interface, please use WAN IP Alias.
You can set up to 8 public IP addresses other than the current one
you are using. Notice that this setting is available for WAN1 only.
Fixed IP Address -
Type a fixed IP address.
WAN IP Network
Settings
Obtain an IP address automatically
– Click this button to obtain
the IP address automatically.
Specify an IP address
– Click this radio button to specify some data.
IP Address
– Type the IP address.
Subnet Mask
– Type the subnet mask.
4.1.4 Load-Balance Policy
This router supports the function of load balancing. It can assign traffic with protocol type, IP
address for specific host, a subnet of hosts, and port range to be allocated in WAN1 or WAN2
interface. The user can assign traffic category and force it to go to dedicate network interface
based on the following web page setup. Twenty policies of load-balance are supported by this
router.
Note:
Load-Balance Policy is running only when both WAN1 and WAN2 are activated.
VoIPon
www.voipon.co.uk
sales@voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
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Vigor2920 Series User’s Guide
78
Index
Click the number of index to access into the load-balance policy
configuration web page.
Enable
Check this box to enable this policy.
Protocol
Use the drop-down menu to change the protocol for the WAN
interface.
WAN
Use the drop-down menu to change the WAN interface.
Src IP Start
Displays the IP address for the start of the source IP.
Src IP End
Displays the IP address for the end of the source IP.
Dest IP Start
Displays the IP address for the start of the destination IP.
Dest IP End
Displays the IP address for the end of the destination IP.
Dest Port Start
Displays the IP address for the start of the destination port.
Dest Port End
Displays the IP address for the end of the destination port.
Click
Index 1
to access into the following page for configuring load-balance policy.
VoIPon
www.voipon.co.uk
sales@voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 89 / 251
Vigor2920 Series User’s Guide
79
Enable
Check this box to enable this policy.
Protocol
Use the drop-down menu to choose a proper protocol for the WAN
interface.
Binding WAN
interface
Choose the WAN interface (WAN1 or WAN2) for binding.
Auto failover to other WAN
– Check this button to lead the data
passing through other WAN automatically when the selected
WAN interface is failover.
Src IP Start
Type the source IP start for the specified WAN interface.
Src IP End
Type the source IP end for the specified WAN interface. If this field
is blank, it means that all the source IPs inside the LAN will be
passed through the WAN interface.
Dest IP Start
Type the destination IP start for the specified WAN interface.
Dest IP End
Type the destination IP end for the specified WAN interface. If this
field is blank, it means that all the destination IPs will be passed
through the WAN interface.
Dest Port Start
Type the destination port start for the destination IP.
Dest Port End
Type the destination port end for the destination IP. If this field is
blank, it means that all the destination ports will be passed through
the WAN interface.
VoIPon
www.voipon.co.uk
sales@voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299
Page 90 / 251
Vigor2920 Series User’s Guide
80
4.2 LAN
Local Area Network (LAN) is a group of subnets regulated and ruled by router. The design of
network structure is related to what type of public IP addresses coming from your ISP.
4.2.1 Basics of LAN
The most generic function of Vigor router is NAT. It creates a private subnet of your own. As
mentioned previously, the router will talk to other public hosts on the Internet by using public
IP address and talking to local hosts by using its private IP address. What NAT does is to
translate the packets from public IP address to private IP address to forward the right packets
to the right host and vice versa. Besides, Vigor router has a built-in DHCP server that assigns
private IP address to each local host. See the following diagram for a briefly understanding.
In some special case, you may have a public IP subnet from your ISP such as
220.135.240.0/24. This means that you can set up a public subnet or call second subnet that
each host is equipped with a public IP address. As a part of the public subnet, the Vigor router
will serve for IP routing to help hosts in the public subnet to communicate with other public
hosts or servers outside. Therefore, the router should be set as the gateway for public hosts.
VoIPon
www.voipon.co.uk
sales@voipon.co.uk
Tel: +44 (0)1245 808195
Fax: +44 (0)1245 808299

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