36 | About the Radio
Aprisa SRi User Manual 1.1.0
Advanced Gateway Router Mode (AGRM) and Advanced Router Mode (ARM)
The Advanced Gateway Router Mode (AGRM) or Advanced Router Mode (ARM) are enabled when either
Router or a Gateway Router modes are selected and the Advanced
checkbox is ticked (see ‘
Advanced Gateway Router mode (AGRM) or Advanced Router mode (ARM) act like a true router between the
Ethernet ports and the RF interface port where the next hop is either an Ethernet port or an RF port (in the
non-advanced option the next hop is the Ethernet interface of the next hop radio and the RF interface are
for internal use). This means that the RF Interface of the radio also becomes a public interface, so the user
should be able to use this interface just like any other Ethernet interface.
In AGRM, all Ethernet ports have the same IP address and subnet and in ARM, each Ethernet interface has a
different IP address and subnet. In addition, the advanced option supports a new mix between AGRM / ARM
and Bridge Mode in a radio network. The following mix of [Base Station] - [Remote] networks are supported:
•
AGRM / ARM - Bridge network
i.e. base station AGRM / ARM and remote radios in Bridge mode.
•
Bridge - AGRM / ARM network
i.e. base station in Bridge mode and remote radios are in AGRM /
ARM, where each node in the network can act as independent router without depending on other
nodes in the network.
•
Bridge - Mix [AGRM / ARM and Bridge] network
i.e. base station in Bridge mode and remotes are a
mix of Bridge and AGRM / ARM.
•
AGRM / ARM - Mix [AGRM / ARM and Bridge] network
i.e. base station in AGRM / ARM and remotes
are a mix of Bridge and AGRM / ARM.
•
AGRM / ARM
–
AGRM / ARM network
i.e. base station in AGRM / ARM and remote radios are also in
AGRM / ARM.
The last option is a fully routed network where it is recommended to use the standard router modes to
benefit from the radio port auto IP assignment and auto static route build for all associated devices
connected to the radio network.
Note:
A mix between advanced router modes and standard router modes in the network is prohibited and
will raise a ‘
network configuration warning
’ alarm. If a user wants to build a full routed network, use the
standard router modes for the base station, remote radios.
The following figures are examples of the currently supported networks as described above.
The above figure describes a mixed radio mode network (AGRM-Bridge) where base station is in Advanced
Gateway Router Mode (AGRM) and the remote radios are in bridge mode (where the base station is AGRM /
ARM and all remotes must be in the same bridge mode). RTUs must set their default gateway to 10.10.1.1
which is RF IP Address of base station to reach the SCADA master.