Device-to-Device Linking (DtDLink)

The following figures show various ways to connect multiple nodes together at a single site.

The 802.1q switch and the AREDN nodes implement VLANs as follows:

VLAN1

• Built in to the node and is always defined as "gateway access to another network (internet)".
• There is no DHCP to turn on/off on the node for this interface.
• The foreign network is expected to have a DHCP server turned on.

VLAN2

• Built in to the node and is used to enable the nodes to 'mesh' together and share routing information and related traffic.

VLAN10, VLAN21 VLAN63, etc

• For all the devices to be on a given node's LAN.
• The node is configured to advertise the device's service to the mesh.
• DHCP is turned on/off for the LAN of the node to issue IP addresses to the devices.
• You cannot have more than one node trying to service DHCP requests at the same time to the same device.  The 802.1q switch isolates the devices to a single node that shares the same VLAN port designation.

Reference

http://en.wikipedia.org/wiki/IEEE_802.1Q