Advice on the configuration of a Sigma DNN (Distributed Network Node) when connecting it to a "Subnetted" Ethernet network. The DNN provides a communications route to Sigma controllers connected to an Ethernet or ARCnet sublan.
Ethernet or ARCnet subnets
General configuration advice
A "Subnetted" Ethernet network is a network that contains a number of subnets, for instance a network who's address is 10.158.1.0 Mask 255.255.255.0 will contain network addresses 10.158.1.1 to 10.158.1.254. The IP address 10.158.2.1 will be connected to another subnet of that network.
On this type of network the Sigma DNN will require an IP address, Subnet Mask and a Static Route to be entered.
The Static Route is entered using the Pocket Terminal programme and is entered as follows.
SR+ 0.0.0.0/0 Default Gateway of subnet Ethernet and the Ethernet port number,
so, if the default gateway for this subnet was 10.158.1.254 and the Ethernet port number was 5, then the following would be entered using the Pocket Terminal programme.
SR+ 0.0.0.0/0 10.158.1.254 5
In this type of configuration it is generally necessary to disable RIP on the DNN, which is enabled by default.
To disable RIP on port 5 of the DNN.
Start the Pocket Terminal programme.
Enter RIPD 5 and select send.
As RIP is disabled, the sublan route is not broadcast to the network, and therefore this routing must be added to the network routers. This requirement must be pointed out to the IT network administrators.