Nautel Exporter Plus, Техническое руководство по эксплуатации, Страница: 17 / 186

Exporter Plus Technical Instruction Manual Description
Issue 1.0 2020-05-05 Page 1-5
Multiple subnets
The Exporter Plus has dual Ethernet ports that can be used to isolate IBOC data from other
network IP traffic. The potential problem is that IBOC data is a streaming format with
embedded timing information which can be degraded if flowing through a busy local area
network. Consider the network configuration in Figure 1.6 .
Figure 1.6: Dual Subnet Network
A user on the Studio Network PC will want the ability to browse both the Internet
(192.168.1.x subnet) and equipment on the 10.10.10.x subnet. In order to do this the Studio
Network PC needs several gateways - one for the Internet router and one for the 10.10.10.x
subnet. Typical PC configuration allows for a single gateway, however it is possible to modify
the PC routing table to assign gateway addresses to specific IP addresses.
Figure 1.7 on page 1-6 shows the command
route table
and describes how to add the exciter IP
address to the routing table of the Studio Network PC. Using the example equipment
configuration and IP addresses shown in Figure 1.6 , the command to add a static IP route
would be:
– route add 10.10.10.0 mask 255.255.255.0 192.168.1.3
To make the static route persistent, you can use the “-p” option when adding routes.
To confirm that you have added the route correctly, use the command
route print
. Figure 1.8
on page 1-7 shows the command
route print
which displays the content of the route table.
Exporter Plus
Eth1 IP = 192.168.1.3
Eth0 IP = 10.10.10.1
IP Forwarding = On
GW = 192.168.1.1
Studio Network PC
IP = 192.168.1.2
GW = 192.168.1.1
Route 10.10.10.2
to 192.168.1.3
Router
IP = 192.168.1.1
subnet 192.168.1.x
Other
Subnets/
Internet
Exciter
IP = 10.10.10.2
GW = 10.10.10.1
IBOC
Data
Transmitter
IP = 192.168.1.5
subnet 10.10.10.x