The H24 receiver in bedroom has the following info listed under system info.
SWM Firmware Version - 1.0.11
SWM Library Version - 1.0.8
IP - 169.254.4.xxx ? ( not really sure where or why this has an IP )
Subnet - 255.255.0.0
STB Port - N/A (100)
Network - Coax Not Connected (9)
Internet - Not Connected (9)
The HR24 under this section is fully populated, the info for the HR24 is posted in another post that I made after this one named "Tvapps"
The H24 also from menu has option to manage autotune and HR24 does not, even when Cat 5 unplugged it still won't list same info.
The H series has the Autotune, the HR series does not.
If you're seeking MRV capability, there's only two recommended solutions:
1) If I understand, you have a wired ETHERNET cable ran from HR21 to router LAN but the H24 is not connected. If so, one solution w/b to run another ETHERNET cable from the H24 in B/R to router. You would need authorization for unsupported MRV using home network (or ETHERNET). I would not recommend wireless or powerline adapters for MRV.
2) Upgrade to DECA for supported MRV over coax. Since you only need two DECA modules (one standard DECA and one BB DECA... see posts #2 & 5), coax and maybe another splitter, you may get DECA cheaper DIY or negotiating a discount on DECA upgrade.
If you're not interested in MRV, a wireless adapter may be easier to install but may not be as cost effective as upgrading to DECA.
BTW, Davedirectv was right, they're not seeing other because they're technically not connected to each other. Connecting via SWiM only does not provide all the connections that DECA provides but plugging both to ETHERNET does but may impact HD MRV streams. Removing all ETHERNET and upgrading to DECA will also allow them to see other and have the recommended MRV over coax capability.
I'm not sure but I think the DVR is not showing the MRV tab for one or more reasons; not authorized for MRV, and/or not seeing a compatible connected device.