The Settings menu is the same as on the Centre station except for the following:
Unit name: RipEX2-Remote
Radio IP: 10.10.10.2/24
ETH IP: 192.168.141.239/24
ARP Proxy & VLAN: On
ARP Proxy & VLAN menu must be opened and configured. Set the Alias IP address for the Ethernet interface. We simulate several subnets behind local RipEX’s Ethernet (or SLIP protocol).
That is not necessary for GRE functionality; it is just used to show this configuration option.
To set and enable this alias, you need to click on the “Add Subnet”
button and fill in the 172.20.20.1/30 subnet into the
Set the Peer IP to the RipEX1-Base Ethernet IP address – 192.168.131.238. The GRE subnet must correspond to the Centre settings, i.e. choose the second IP address within a given subnet – 10.2.2.1/31.
The last step is to configure Routing rules.
192.168.131.0/24, Gateway 192.168.141.254
This rule depends on your L3 infrastructure, but in our example, we use the rule to route data for 192.168.131.0/24 network via local gateway.
192.168.131.16/32, Gateway 10.2.2.0
The route using the GRE tunnel – packets for the Server (192.168.131.16) are encapsulated into the GRE. You might configure other destinations within this subnet if required, but not 192.168.131.238 (RipEX Ethernet – Peer IP, i.e. RipEX1-Base).
172.16.200.0/24 a 172.20.20.4/30, Gateway 10.10.10.4
Data for subnets behind RipEX4-Remote are routed to its 10.10.10.4 Radio IP address (i.e. not using GRE tunnel).