IRT-101
ISDN Internet Router
User's Manual
Appendix B LAN Tab
Unless your LAN has a Router, it is usually unnecessary to
change the settings on this screen.
An example screen is shown below. This screen has 3
sections relating to the LAN on which the ISDN Internet Router is installed.
- DHCP Server
- Routing Table
- DNS (Domain Name Server) IP Addresses

Figure 1: LAN Tab
Overview
- A DHCP (Dynamic Host Configuration Protocol) server provides
a valid IP address, Gateway address and DNS addresses to a DHCP client (PC or device) upon
request.
- The ISDN Internet Router can act as a DHCP Server.
The default value is ON (Enabled), and use of this feature is strongly recommended.
- To use this feature, ensure that Enable is
checked.
Also, the PCs must be configured to act a DHCP clients.
IP Address allocated by the DHCP Server
- Normally, the default values for the DHCP Server do not need
to be changed. However, if your LAN already has some devices using fixed IP Addresses, you
must ensure that each of those devices uses an IP Address which is compatible with the IP
Addresses allocated by the DHCP Server.
"Compatible" means:
- The IP Address is from the same address range as the DHCP
Server.
By default, the ISDN Internet Router uses the IP Address range 192.168.0.1 to
192.168.0.254.
- The IP Address must NOT be within the group allocated by the
DHCP Server.
By default, the ISDN Internet Router allocates addresses between 192.168.0.2 to
192.168.0.51. Therefore, addresses between 192.168.0.52 and 192.168.0.254 are available
for other devices.
- All devices must use the same Network Mask (Subnet
Mask).
- If you have non-PC devices on your LAN, it may be more
convenient to change the IP Addresses allocated by the DHCP Server function in the ISDN
Internet Router, rather than change the IP Addresses used by the existing devices.
To do this:
- For the Start IP Address, enter the first IP Address
of the range of IP Addresses to be allocated by the DHCP Server.
- In the End IP Address, enter the last IP Address of
the range of IP Addresses to be allocated by the DHCP Server function.
- Ensure that the range is large enough for all of the PCs and
devices which will be acting as DHCP clients and requesting an IP Address. The default
number of clients is 50; the maximum is 253.
This is a static Routing Table. Entries are required only
if your LAN contains 1 or more Routers.
If you are using the ISDN Internet Router for LAN-to-LAN
connectivity, an entry will automatically appear here for the remote LAN you are
connecting to. Do NOT delete this entry.
Space is provided for 3 entries. The first entry will
display the DNS value entered on the Quick Setup screen.
Enter addtional values if you wish. If multiple entries are
provided, the first available DNS will be used.
- PLANET Technology Corp.
- 11F, No. 96, Min Chuan Road,
- Hsin Tien, Taipei, Taiwan, R.O.C
- TEL: 886-2-22199518
- FAX: 886-2-22199528
- E-mail: support@planet.com.tw
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