I had the installer from hell this afternoon. Actually, he was a nice guy, just very clueless to DECAs. After six hours, I was told that he couldn't troubleshoot it any longer and had other customers to service and left.
Needless to say, I called Directv to complain. The CSR I spoke to was appalled at the fact the tech just left. I had the manager of the installation company call a few minutes later. He was just going to have the tech return to finish the job. I had to remind him that the tech was unable to complete the job and left.
When the installer called I asked about a SWiM 16 and was told he was bringing one. He brought two SWiM8s with a Dual SWM Expander. He kept claiming it was a SWiM16.
The DECAs aren't seeing each other, so I suspect it's a switch. I also have one DECA on a HR20-100 that won't light up. You can move it to another unit and all three lights come on.
The question I do have is how are the DVRs addressed when using the typical DECA cloud? I thought that they would just use DHCP to request an address. Mine are getting a 169 private subnet, but also can't see the broadband DECA. I suspect that is because they can't see the DHCP server and the Internet. I even went so far as enter static addresses that I used previously to no avail.
Any receiver based off of one SWiM8 will not see those off of the other SWiM8, hence why you do need a SWiM16.
The HR20 might not have been working correct as there is an issue with them powering the DECA. You most likely needed a PI to run that DECA. I assume that the other receiver you then hooked it up to was not a HR20.
As for network addressing, if the DECA cloud is correctly bridged to your local network, DHCP addressing will work. If the DECA cloud is not bridged, then you need to assign the IP addresses manually.
Today's problems don't worry me, I haven't solved yesterday's yet.
SlimLine-3 Dish w/ SWM16 (HD Service / WHDVR) / Full Setup
HR34-700 / Panasonic TC-P50G25 HDTV / HDMI / Networked - DECA / Family Room
HR44-700 / Samsung HCM5525W HDTV / Component / Networked - DECA / Bedroom
HR24-100 / Samsung HCM5525W HDTV / Component / Networked - DECA / Bedroom