User's Manual

NETNode
Phase 1 and 2 Units
NETNode
User Manual
NETNode-V2.3
8-82
DS000034 Unclassified
To isolate the IP layers each NetNode contains a second IP address (and MAC address)
which is used for the tunnelling. This IP address only supports ARP, ICMP (ping) and the
UDP tunnelling packets.
When this Interlink mode is activated, each node also sends out a broadcast packet on the
second IP interface which advertises it‟s presence on the IP backbone. This allows each node
to know what other nodes are connected to the backbone, and therefore whether the
interlink data can be sent over the IP network. The nodes also check that there is one and
only one master on the network and correct this if necessary. This is useful if, for example,
the master is lost from the network.
8.2. Configuring Interlink Mode
If there are multiple mesh networks on different frequencies anywhere on the same network
they must have different Mesh ID‟s before starting. This can be checked with Nodefinder.
To enable the interlink mode first make sure only one NetNode is connected to the IP
backbone, and all other nodes to be connected are currently accessable on the Mesh
Network. Set the tunnelling IP address and the Tunnel Mode to „Master‟.
This should leave the unit connected to the network. You should now be able to ping the
tunnel IP Address as well as the unit‟s main IP address.
Without changing the Mesh topology, connect to each node in turn on the IP backbone. Set
the tunnel IP address and the tunnel Mode to „Slave‟. You will only be able to ping the tunnel
IP address when the unit is connected via the backbone. Leave the Tunnel Mode of the
nodes not connected to the backbone to Off.
Main IP address
10.184.51.9
Tunnel IP address
10.184.51.219
Main IP address
10.184.51.15
Tunnel IP address
10.184.51.215
IP Backbone
IP address
10.184.51.17
Tunnel Data
Master
Slave