User's Manual

SPEEDLAN TM

2. Select the Specify an IP address option. Enter the following information:

• Our IP Address – The unique number assigned by the network administrator, ISP or host

provider. This tells network the location (IP address) of the computer on the Internet (i.e.,

128.104.224.2).

• Our Subnet Mask - This term allows network administrators to mask section(s) (depending on

the class specified) of the octets in the network address. Each octet used in the subnet mask is

assigned to a data link. The leftover octet(s) are assigned to the remaining nodes.

Note: For more information, see the figure called Subnetting a Network in the section called

Part I - A Quick Overview of IP Addressing, page 48. Once the packet has traveled to the

appropriate network, it goes through a masking process. A subnet mask is composed of zeros (0s)

and (1s). This tells the router which addresses to look under and which ones not to look under.

Therefore, subnet masking allows the router to transfer the packet traffic more quickly than a

network without a subnet. Again, this address is obtained from the network administrator, IP host, or

host provider.

• Default Router IP – If you have an established network, use the IP address for the router

already set up for that network. If you do not have an established network, leave this entry

blank.

• Default TTL – This information should already be entered. The IP host on the Internet will send

out each packet with a default “Time to Live” parameter. If you want to override the factory

default of 64 attempts, you can specify your new default here. This parameter should not be

changed unless you are very familiar with IP functionality and how the Time to Live parameter

will affect the method packets the treated by your network, as well as the network to which you

are bridged (or routed).

Note: Click Select to view the IP Mask List. Select the appropriate IP Mask and click OK.

3. After you have finished entering the appropriate information, click OK.

4. Now save the changes to the brouter. From the File menu, choose Save Config.

5. A message box appears informing you that the information will be saved to the brouter

(i.e., 128.104.22.4). Click Ye s.

6. The Configurator confirms that the configuration has been saved. Click OK. Restart the computer.

Note: You are finished with this section. If you want to set up NAT, see Part III - Setting Up NAT,

page 61.