I’m using 188.8.131.52 beta 3 on C5x (I’m connecting to an A5 which can’t yet use 2.8.1) in WiFi Interop mode. In some C5x’s the PTMP Speed Upgrade shows as Enabled and the Ethernet port connects at 1000Mbps Full Duplex, in other C5x’s it shows as Disabled and the port shows 100Mbps Half Duplex, and in some other C5x’s the feature shows as Enabled and I get 1000Mbps Half Duplex.
1000Mbps Full Duplex
100Mbps Half Duplex
1000Mbps Half Duplex
If I upgrade any of the C5x’s to 2.8.1 I get the 1000Mbps Full Duplex (but again I am connecting to an A5 which needs 2.5.4. I’ve also tried connecting directly to my computer which supports 1Gbps connections with no difference. Any thoughts on (1) why the PTMP Speed Upgrade would be disabled on some C5x’s, and (2) why when it is enabled some C5x’s connect at Full Duplex and others Half Duplex?