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In this example Router 3 of the production network is to be configured with 2 static IP routes pointing to networks 1 and 2
that Ethernet devices behind Router 1 and Router 2 (connected at LAN port) can find each other. As an alternative all
Routers can be configured to use dynamic IP routing (either RIP or OSPF or both) to announce their connected networks
to the other Routers automatically without configuring static routes at Router 3 manually. Using dynamic routing is more
convenient if it is planned to extend the Ethernet network with additional machine networks. Then you don’t have to add
a new static route to Router 3 in the case of connecting a further machine network to the production network. This would
be automatically done by RIP- or OSPF-based dynamic IP routing.
The alternative method using dynamic routing is described at the end of this document in chapter A5.
Starting situation
All Routers have the factory default configuration and can be accessed either using the LAN port by IP address
192.168.1.110 or using the WAN port by IP address 192.168.2.110.
Due to the fact that the machine network Routers 1 and 2 have to be configured on the LAN port with 1:1 NAT (with a
private and a public IP address), which means setting two times new IP addresses (private and a public) on this port
during the configuration process, it is more comfortable to connect the Configuration PC to the WAN port of the Routers.
Then the IP address of the PC has only one time to be changed after setting the new WAN port IP address.
1. Connect the configuration PC to the Router using the WAN Port
Use autonegotiation on the Ethernet Interface of the PC
2. Change the IP address of the PC to one of the range 192.168.2.0
e.g.
IP address
192.168.2.100
Subnet mask
255.255.255.0
Standardgateway can be left blank due to direct cable connection
3. Start a Web browser and login into the Web server of Router (
User:
admin
Password:
Detmold
Figure A4-1
: Login page of the Router (equivalent with menu Diagnostics
System State)
