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Page 46 / 68 Scroll up to view Page 41 - 45
RP614v4 Cable/DSL Router Reference Manual
4-10
Advanced Configuration of the Router
v3.0, 2006-03
Configuring LAN TCP/IP Setup Parameters
The router is shipped preconfigured to use private IP addresses on the LAN side, and to act.as a
DHCP server. The router’s default LAN IP configuration is:
•
LAN IP addresses—192.168.1.1
•
Subnet mask—255.255.255.0
These addresses are part of the IETF-designated private address range for use in private networks,
and should be suitable in most applications. If your network has a requirement to use a different IP
addressing scheme, you can make those changes in this menu.
The LAN IP parameters are:
•
IP Address.
This is the LAN IP address of the router.
•
IP Subnet Mask.
This is the LAN Subnet Mask of the router. Combined with the IP address,
the IP Subnet Mask allows a device to know which other addresses are local to it, and which
must be reached through a gateway or router.
•
RIP Direction.
RIP (Router Information Protocol) allows a router to exchange routing
information with other routers. The RIP Direction selection controls how the router sends and
receives RIP packets. Both is the default.
–
When set to Both or Out Only, the router will broadcast its routing table periodically.
–
When set to Both or In Only, it will incorporate the RIP information that it receives.
–
When set to None, it will not send any RIP packets and will ignore any RIP packets
received.
•
RIP Version.
This controls the format and the broadcasting method of the RIP packets that the
router sends. (It recognizes both formats when receiving.) By default, this is set for RIP-1.
–
RIP-1 is universally supported. RIP-1 is probably adequate for most networks, unless you
have an unusual network setup.
–
RIP-2 carries more information. RIP-2B uses subnet broadcasting.
Page 47 / 68
RP614v4 Cable/DSL Router Reference Manual
Advanced Configuration of the Router
4-11
v3.0, 2006-03
Using the Router as a DHCP server
By default, the router will function as a DHCP (Dynamic Host Configuration Protocol) server,
allowing it to assign IP, DNS server, and default gateway addresses to all computers connected to
the router's LAN. The assigned default gateway address is the LAN address of the router. IP
addresses will be assigned to the attached computers from a pool of addresses specified in this
menu. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.
For most applications, the default DHCP and TCP/IP settings of the router are satisfactory. See
“Internet Networking and TCP/IP Addressing” in Appendix B
for for an explanation of DHCP and
information about how to assign IP addresses for your network.
If another device on your network will be the DHCP server, or to manually configure the network
settings of all of your computers, clear the ‘Use router as DHCP server’ check box. Otherwise,
leave it checked.
Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP
Address. These addresses should be part of the same IP address subnet as the router’s LAN IP
address. Using the default addressing scheme, you should define a range between 192.168.1.2 and
192.168.1.253, although you may wish to save part of the range for devices with fixed addresses.
The router will deliver the following parameters to any LAN device that requests DHCP:
•
An IP Address from the range you have defined
•
Subnet Mask
•
Gateway IP Address (the router’s LAN IP address)
•
Primary DNS Server (if you entered a Primary DNS address in the Basic Settings menu;
otherwise, the router’s LAN IP address)
•
Secondary DNS Server (if you entered a Secondary DNS address in the Basic Settings menu
Using Address Reservation
When you specify a reserved IP address for a computer on the LAN, that computer will always
receive the same IP address each time it access the router’s DHCP server. Reserved IP addresses
should be assigned to servers that require permanent IP settings.
To reserve an IP address:
1.
Click the
Add
button.
2.
In the IP Address box, type the IP address to assign to the computer or server. Choose an IP
address from the router’s LAN subnet, 192.168.1.X.
Page 48 / 68
RP614v4 Cable/DSL Router Reference Manual
4-12
Advanced Configuration of the Router
v3.0, 2006-03
3.
Type the MAC Address of the computer or server.
4.
Click
Apply
to enter the reserved address into the table.
Note: The reserved address will not be assigned until the next time the computer contacts the
router's DHCP server. Reboot the computer or access its IP configuration and force a DHCP
release and renew.
To edit or delete a reserved address entry:
1.
Click the button next to the reserved address you want to edit or delete.
2.
Click
Edit
or
Delete
.
Using a Dynamic DNS Service
If your network has a permanently assigned IP address, you can register a domain name and have
that name linked with your IP address by public Domain Name Servers (DNS). However, if your
Internet account uses a dynamically assigned IP address, you will not know in advance what your
IP address will be, and the address can change frequently. In this case, you can use a commercial
dynamic DNS service, which will allow you to register your domain to their IP address, and will
forward traffic directed at your domain to your frequently-changing IP address.
The router contains a client that can connect to many popular dynamic DNS services. You can
select one of these services and obtain an account with them. Then, whenever your ISP-assigned
IP address changes, your router will automatically contact your dynamic DNS service provider,
log in to your account, and register your new IP address.
To configure Dynamic DNS:
Page 49 / 68
RP614v4 Cable/DSL Router Reference Manual
Advanced Configuration of the Router
4-13
v3.0, 2006-03
1.
From the Main Menu of the browser interface, under Advanced, click on Dynamic DNS.
Figure 4-7
2.
Register for an account with one of the dynamic DNS service providers whose names appear
in the ‘Service Provider’ box. For example, for dyndns.org, go to www.dyndns.org.
3.
Check the Use a dynamic DNS service check box.
4.
Select your dynamic DNS Service Provider from the Service Provider box.
5.
Type the Host Name (or domain name) that your dynamic DNS service provider gave you.
6.
Type the User Name for your dynamic DNS account.
7.
Type the Password (or key) for your dynamic DNS account.
8.
If your dynamic DNS provider allows the use of wildcards in resolving your URL, you may
select the Use wildcards check box to activate this feature. For example, the wildcard feature
will cause *.yourhost.dyndns.org to be aliased to the same IP address as yourhost.dyndns.org
9.
Click
Apply
to save your configuration.
Configuring Static Routes
Static Routes provide additional routing information to your router. Under normal circumstances,
the router has adequate routing information after it has been configured for Internet access, and
you do not need to configure additional static routes. You must configure static routes only for
unusual cases such as multiple routers or multiple IP subnets located on your network.
Page 50 / 68
RP614v4 Cable/DSL Router Reference Manual
4-14
Advanced Configuration of the Router
v3.0, 2006-03
From the Main Menu of the browser interface, under Advanced, click on Static Routes to view the
IP Static Routes menu, shown below.
Figure 4-8
To add or edit a Static Route:
1.
Click the Add button to open the Add/Edit Menu.
Figure 4-9
2.
Type a route name for this static route in the Route Name box under the table. This is for
identification purposes only.
3.
Check the Private box if you want to limit access to the LAN only. The static route will not be
reported in RIP.
4.
Select Active to make this route effective.
5.
Type the Destination IP Address of the final destination.

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