Having set Link Addressing in a Sigma DNN3 can no longer communicate to the DNN3 and Link Addressing does not work.

[Product_Support]

Issue

After configuring Link Addressing on a Sigma DNN3, communication with the DNN3 fails, and Link Addressing does not function as expected.

Product Line

Satchwell BAS & Sigma

Environment

• Multiple Sigma controllers across at least two Ethernet VLANs
• DNN3 devices (version 1.h) connected to each VLAN
• Port 1 of each DNN3 connects to the VLAN
• Port 2 is configured as a virtual Serial PPP port (not physically connected to a device)

Cause

Although Link Addressing may be correctly configured, the DNN3 devices lack routing information (i.e., static routes).
Without this, the DNN3 cannot transmit point-to-point global data to the appropriate router or default gateway.

Additionally:

• With both ports configured, RIP (Routing Information Protocol) is enabled by default.
• RIP broadcasts misleading routing information, advertising port 2 as a valid route, which is incorrect.
• RIP must be disabled to prevent this false advertisement.

Resolution

To restore communication and proper Link Addressing functionality:

1. Add a default static route to each DNN3 using Pocket Terminal 32 via the service port:

   SR+ 0.0.0.0/0 192.168.1.253 1
   

   • 0.0.0.0/0 is the generic destination and mask
   • 192.168.1.253 is the default gateway
   • 1 is the DNN3 port number

1. Disable RIP on port 1 of the DNN3:

   RIPD 1
   

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Additional Notes

• Ensure that no devices are physically connected to port 2 if it's configured as a virtual PPP port.
• This configuration ensures that global data is routed correctly between VLANs and prevents routing conflicts.