Linking 2.4 and 5.8 via DtD ??

DtD does not care at all what RF a node has (or even if there is none).  I am unfamiliar with either of those nodes, but I assume they are single Ethernet port devices.  If so, just connect the two Ethernet port together and they will connect via DtD.  Nothing special required.  If those devices have multiple Ethernet ports, determine which port is the DtD port and connect those ports together.  If you want more than two nodes DtD connected, use either a dumb switch for the DtD or if you need to also extract LAN or WAN, use a smart switch.  That will require a little config in the swtch - nothing in the AREDN nodes.

 

Hi, Scott:

" How would I configure the LAP-120's and the CPE210 through DtD so that they all communicate?"
+1 with K6CCC.
Connect them to an ethernet switch and hope that the switch passes VLAN2.
Most do.
Since you also mention that the nodes will be at your QTH.
Thus I assume you mean your home and also assume you will manage them
with a home computer.
Then also plug the DtD port of of the hAP* into the same switch.
Plug your home computer(s) and service(s) into the LAN ports of the hAP*.

73, Chuck
 

Wow, that's a lot of gear for a home location! 

Too bad you don't have a POE switch.  You don't even need a fancy managed switch, just one you can control POE and get 24V out of, the entire switch would be VLAN2.  I would suggest just using the hAP ac2 and configure some LAN ports for your computers, and it will give you a nice LAN wifi as well.  Then my suggestion is get an 8 port POE switch (not an AREDN device) and have it all on VLAN2 and have all the devices on the tower powered from there.  Config 7 ports POE and one not POE, then run one cable from that unpowered port to port 5 (with POE off) of the hAP and you're there.   Makes it much tidier than all the power injectors, or using the hAP lites to get POE.   Ed

The big decision is if you run one cable up the tower then split to three with the outdoor switch, or if you run a cable for each device.  A cable for each device is more cost and more work, but you can control each device power and on/off separately with more cables.  Also, the outdoor switch does not generate POE which Chuck suggests in his post. 

A low end POE switch that could work with a cable to each antenna is similar to this

 https://www.netgear.com/business/wired/switches/unmanaged/gs308pp/

I haven't yet looked at the details so it might not be appropriate.  You want a switch where the control panel allows you to select POE at 24VDC rather than auto negotiate with a fancy new standard.  If you have a future need for a POE camera on the tower many switches give you choice of voltage. 

As I said earlier, the pivotal decision is how much cable you are willing to run up the tower.   Ed