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Vigor2930 Series User’s Guide
38
ISDN Dial Backup
Setup
This setting is available for the routers supporting ISDN function
only. Before utilizing the ISDN dial backup feature, you must
create a dial backup profile first. Please click
Internet Access
Setup
>
Dialing to a Single ISP
to enter the backup profile.
None
- Disable the backup function.
Packet Trigger -
The backup line is not on until a packet from a
local host triggers the router to establish a connection.
This setting is available for
i
model only.
MTU
Mean maximum transmission unit of one packet. The default
value 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. This setting is active
only when the
Active on demand
option for Active Mode is
selected in
WAN>> General Setup
page.
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.
Fixed IP Address -
Type a fixed IP address.
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.
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igor2930 Series User’s Guide
39
Default MAC Address
– Click this radio button to use default
MAC address for the router.
Specify a MAC Address
- Some Cable service providers specify a
specific MAC address for access authentication. In such cases you
need to click the
Specify a MAC Address
and enter the MAC
address in the MAC Address field.
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.
3.1.4 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.
Index
Click the number of index to access into the load-balance policy
configuration web page.
Enable
Check this box to enable this policy.
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40
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
Display the IP address for the start of the source IP.
Src IP End
Display the IP address for the end of the source IP.
Dest IP Start
Display the IP address for the start of the destination IP.
Dest IP End
Display the IP address for the end of the destination IP.
Dest Port Start
Display the IP address for the start of the destination port.
Dest Port End
Display the IP address for the end of the destination port.
Move UP/Move Down
Use
Up
or
Down
link to move the order of the policy.
Click
Index 1
to access into the following page for configuring load-balance policy.
Enable
Check this box to enable this policy.
Protocol
Use the drop-down menu to choose a proper protocol for the WAN
interface.
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igor2930 Series User’s Guide
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Binding WAN
interface
Choose the WAN interface (WAN1 or WAN2) for binding.
You can check the box of
Auto failover to other WAN
to make
a backup WAN connection if the selected WAN interface fails to
connect to Internet.
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.
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42
3.2 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.
3.2.1 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.

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