Cabletron Systems DMS-100 - Manual (Page 149)

Appendix E: Understanding IP and IP addressing 149
DMS-100 Family EIU User Guide TELECOM12
Figure 27 Detailed network diagram
Choosing IP addresses
IP was originally developed to allow large numbers of diverse institutions to
interconnect their local hosts and networks into a larger network (an
Internetwork). In time, a larger entity connecting many networks and nodes
evolved—the Internet. IP addresses on the Internet are administered so that the
network number assigned to an institution is unique. Upon application to the
Network Information Center (NIC), each institution is assigned a network
number for its own use. If a network is not connected to a public network, it
can use an arbitrary network number. However, the use of arbitrary numbers is
DMS-100 switch with EIUs
138.109.3.1
138.109.4.1 138.109.2.1
138.109.3.2
To remote router
138.109.4.0
Network 138.109.3.0
Mask 255.255.255.0
File server
138.109.3.3 Printer
138.109.3.4
138.109.2.2
138.109.2.5
138.109.2.3
138.109.2.11
138.109.2.16
138.109.2.21
138.109.2.26
138.109.2.31
138.109.2.36
Network 138.109.2.0
Mask 255.255.255.0