User Guide

NETNode Operations Guide

Commercial in

Confidence

IP Mesh Systems

000-130

R1.8 2015-07-24

Commercial in

Confidence

Page 2-44

Interlink Mode across a VLAN Network (v3.6 onwards) 2.14.1

It is possible to send the interlink data across a separate network. To configure this mode, a

Tunnel VLAN tag and priority must be set to a nonzero value. The Tunnel IP address and

Tunnel Network mask must be set appropriately. This causes a VLAN tag to be added to the

tunnel IP data.

Figure 2-17 Tunnelling settings

The VLAN tag may be removed by an external router, or the NETNode may be configured so

that one Ethernet port has VLAN tagging enabled with the same tag (and priority) as the

tunnel tag. This can then be directly connected to the tunnelling network.

Interlink mode uses UDP ports 29836 (Unicast) and 29837 (network broadcast), which it can

be necessary to unblock on some firewalls.

Note: All separate Mesh networks connected to the IP network (no matter where) must

have different Mesh IDs. Failure to do this will result in loss of functionality.

Note: The Interlink NETNodes must always be linked via the radio interface, as well as the

IP backbone to operate correctly. This ensures the system remains as a single Mesh

Network.

2.15 Adding Static Routes

V5.0 onwards of the software lets the user add static routes for subnets which are not part

of the MESH subnet. Static routes are supported for both LAN and VLAN. Any packet which

matches the subnet specified will be forwarded to that gateway rather than the default

gateway.

To add a static route to the system, browse to the node which is physically connected to the

router for that gateway/subnet. On the configuration -> static routes page select one of the

four entries which is not in use (i.e. Network = 0.0.0.0). Add in the network, subnet mask

and the gateway (which must be on the local subnet). Optionally add the VLAN tag or 0 if on

the main LAN.

Each node distributes its’ own static routes round to all nodes within the MESH network. The

diagram below illustrates a particular example of this: