Yes something has changed in the firmware to make this issue worse or broke it all together. Before when we had the Epmp 1000 we were almost perfect from what the AP and CPE rssi were for downlinnk no matter which unit you logged into.
Now with Force 2000 and the "better recieve" capability we see HUGE increases in signal but in the end its false because the actual RSSI from the AP to the CPE is 10-15 dB worse than what it shows in the AP.
Just now troubleshooting a customer who at the AP this is what he has for signal -65 / -68 and us thinking he has been okay for some time now when in reality its been very low.
Log into his radio it is
STA DL RSSI
Throughput has gone significantly way down since installing the force 2000 at the tower so now I need to figure out do we ditch these units until we get firmware that is showing correct values and or better throughput and put back the AP-1000. Seems since this is getting / guessing the RSSI from the CPE is affecting throughput as well, I can only assume the AP is trying to switch to a higher MCS then the CPE can handle and thus creating issues with speed?
Please enlighten us on how this works becuase if the numbers dont match that cant be a good thing.
If the issue is mismatch in DL RSSI being reported between the CPE and AP, I have already explained why that is the case. Maybe I misunderstood your question and you can expand on it a little bit?
As far as ePMP 2000 is concerned, is the issue that the DL RSSI has gone down or has not changed since you swapped from the ePMP 1000? Once again compare the RSSI on the SM/CPE. It may be the case that even with ePMP 1000, the SM/CPE was reporting -75 but you were looking at the AP reported DL RSSI.
Are you using the same sector antenna you used with the ePMP 1000 or are you using the new sector antenna recommended with the ePMP 2000? If using the new antenna, remember that it comes with 2 degrees electrical down tilt and has 2 dBi additional gain. Hence you will have to adjust it 2 degrees mechanically compared to the old sector antenna. With proper adjustments, you should see 1-2 dB improvement in DL RSSI at the SM/CPEs with the new antenna. If you are using the existing antenna, then no improvement is expected.
The AP does not switch MCS based on guessing the RSSI. The AP switches MCS based primarily on PER (Packet Error Rate) and a few other paramters to a lesser extent and arives at the most optimal MCS for that link. So no, the fact that there is a mimatch of the DL RSSI reported on the AP vs. the CPE does not matter with MCS selection.
Have you tried contacting our support engineers at firstname.lastname@example.org? If not it may be worth a call OR PM me a number I can reach you at so one of our engineers can call you directly and help troubleshoot the ePMP 2000 issues you are having.