Westermo RedFox Series - Manual (Page 703)

Westermo OS Management Guide
Version 4.17.0-0
PLC1 PLC2 PLC3
PLC4 PLC5 PLC6
PLC7 PLC8 PLC9
10.0.0.0/16
PC
(Mgr)
.99
.1 WeOS .1
.5 .11 .33
Proxy ARP
1−1 NAT with
.2 WeOS .1
.5 .11 .33
Proxy ARP
1−1 NAT with
WeOS .1
.5 .11 .33
.3
1−1 NAT with
Proxy ARP
192.168.1.0/24 (10.0.1.0/24)
192.168.1.0/24 (10.0.2.0/24)
192.168.1.0/24 (10.0.3.0/24)
Router1
Router2
Router3
Figure 31.8: Use of proxy ARP with 1-to-1 NAT. The Management PC can reach the
PLCs without explicit routes to networks 10.0.1.0/24, 10.0.2.0/24 or 10.0.3.0/24.
31.1.4.3 NAT and IP Multicast
Chapter 29 describes WeOS support for IP multicast routing. Combining NAT
and IP multicast routing is not generally supported, although there exist some
specific use cases which work as of WeOS v4.17.0. Furthermore, when using
NAT for IP multicast traffic, the address translation only applies to the source IP
address of the multicast packet (the source address is a unicast IP address).
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