User's Manual

SPEEDLAN 8500 Series Installation and Operation User Guide
Setting Up the IP Addresses (IP Host Setup) 7-19
Note: For more information, see Subnetting a Network, page 7-5. Once the packet has
traveled to the appropriate network, it goes through a masking process. A subnet mask
is composed of zeros (0s) and ones (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 how packets are treated by your network, as well as the
network to which you are IDUd (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 IDU. From the File menu, choose Save Config.
5 A message box appears informing you that the information will be saved to the IDU (i.e.,
128.104.22.4). Click Yes.
6 The Configurator confirms that the configuration has been saved. Click OK. The computer
will reboot at this point.
Note: If you want to set up NAT, see Part III - Setting Up NAT, page 7-20.