Specifications
If SCADA device addresses can be chosen arbitrarily, routing can be significantly simplified when radio
IP addresses can be grouped to subnets according to radio network layout.
One example of simplification is shown with repeaters connecting to separate subnets. The routing
table can then contain a single record for all devices on the subnet.
In this example the first repeater connects to subnet 10.10.10.0/29, i.e. devices may have addresses
from 10.10.10.1 to 10.10.10.6 (10.10.10.0 is reserved for the subnet, address 10.10.10.7 for broadcast-
ing).
See e.g. http://www.subnet-calculator.com/subnet.php?net_class=A
10.10.10.17
10.10.10.19
10.10.10.20
10.10.10.3
10.10.10.4
10.10.10.5
10.10.10.10
10.10.10.11
10.10.10.12
allsubnetsmasksare255.255.255.248=/29
10.10.10.9
10.10.10.2
10.10.10.254
10.10.10.18
Fig. 1.2: Network with subnets
• For 10.10.10.254
7© RACOM s.r.o. – RipEX Application notes
Address planing