Hi,So what your describing is how I understood it to work as well. However, from my own testing it doesn't appear to be the case. I have a cable modem with moca 1.1 and two other nodes with the 6200 adapters. They all communicate at moca 1.1 speeds. As soon as I disconnect my cable modem with moca 1.1, communication increases between the moca 2.0 nodes to moca 2.0 speeds. Now that being said, at 1.1 speed my moca 2.0 adapters are still faster than my old moca 1.1 nodes. I attribute this to the Ethernet port going from 100 to 1000 allowing the adapter to fully utilize the moca 1.1 bandwidth. Still I am dissapointed that my moca 2.0 devices aren't communicating at moca 2.0 speed with the moca 1.1 modem present. Did you do something specific to get this working? The moca alliance page specifically has a statement that backs up your test, but I can't seem to get it to work. Wondering if its a limitation with these adapters or firmware.
Back again, and I sort of have to back away from my earlier statement regarding a mixed network maintaining the MoCA 2.0 speeds. After thinking about your differing results, I connected one of the Verizon Branded/ Actiontec WCB3000N's (MoCA 1.1) and low and behold just like you the entire MoCA network dropped to MoCA 1.1 speeds. Apparently, there is something different in the Actiontec MoCA 1.1 products that causes this to happen. Further, when I simply pulled the power from the WCB3000, the network did not automatically return to MoCA 2.0 speeds, I had to reboot them to return to the 2.0 speeds. The MoCA 1.1 adapters I used, which seem to have no effect on the MoCA 2.0 speed links, were the Motorola Surfboard SMART Video Adapters and an off brand MyGica MC-2210, both are rated as MoCA 1.1 but the MyGica ones are not compliant with the standard and although they have the hardware configuration switch, there is no software to enable encription or change the default MoCA channel. They do appear to automatically adjust the channel if added to another established MoCA network. There one advantage is they are less expensive than the Actiontec or other available brands.
I would also expect that if you are using one of the older Actiontec/ Fios routers (Rev F-I) with MoCA Lan enabled, you will automatically be limited to MoCA 1.1 speeds. Not a lot of sense even buying the MoCA 2.0 adapters on one of those systems.