3Com 7000 Network Router User Manual


 
Typical Applications
1
-
7
IP Host on the Same IP Network
If your organization operates a TCP/IP network and needs to extend the
IP network over geographically remote sites, it is possible to bridge the
network using the Bridge/Router Module. It is only possible to bridge
where both sites have the same network address and the devices are
on the same subnet. In a class C IP address, the network address is the
first three groups of numbers. For example:
192.100.100.xxx
where
xxx
represents the host ID of the individual devices on the subnet.
See
“IP Addresses”
in
Appendix A
for more information about addresses.
Typically IP bridging would be used to connect a back office or home office
into a main site. Any further network connections would be carried out
from the main site. An example of such a network is shown in
Figure 1-2
.
During configuration, you enter the ISDN number and the IP addresses
of any hosts to which you want to connect. In the example in
Figure 1-2
, the IP address of the host 191.100.100.100 is used. Only
when data destined for this device is received by the Bridge/Router
Module, is a call made to the remote site.
Figure 1-2
IP Bridged Network