About the Radio | 43
Aprisa SRi User Manual 1.1.0
NAT alarms are supported for any invalid configuration settings, including improper translation entries,
invalid timeout, along with any incompatibilities with other feature settings will cause a
‘
configuration not
supported
’
alarm.
As shown in the figure of Bridge-AGRM network above, IP addresses used in one NAT internal domain can be
reused by any other NAT internal domain. In the example figure above, RTUs connected to AGRM remote-1
and remote-2 reusing the same IP addresses space i.e. in this case all RTUs can have the same IP addresses
space per remote radio.
NAT router radio will respond to inbound ARP requests for IP addresses in public range as define in Address
Map Table with the MAC address of the public interface. Outbound ARP request for private IP range will ARP
respond with MAC address of the NAT radio private/local interface.
In a protected station, all NAT configurations are shared between both the active and standby radios. The
standby radio will not perform any NAT translation and routing. After a protection switch-over, NAT session
table will be aged. For smooth protection switching and continuous traffic flow, the protected station
automatically supports MAC address cloning for both active and standby radios NAT public interface (the
cloned MAC address is presented
in ‘RF Mac Address’ field (see
’ on page
