a week ago
My ISP installed a Huawei HG8245H.
I want to replace it with UBNT GPON if possible and connect it to my ER-X-SFP.
What are my options here? Their equipment is all huawei. Are they cross-compatible? How does the "exchange" (ONT right?) talk to the CPE GPON in terms of protocols? Is it just a matter of simple MAC/ONT ID cloning?
They gave me my pppoe info and I tried to get a pppoe link running from the ER-X-SFP but their CPE router didn't allow passthrough nor there s any support in it.
a week ago
The CPE GPON you're talking about is the NanoG, that's the ONU. Others call it the ONT
Optival Network Unit / Terminal
The Exchange you're talking about is called the OLT - Optical Line Terminal
I'm afraid your chances replacing your ISP ONU with the NanoG ONU, are very low. The ONU supplied by your ISP is filled with a bunch of ISP-specific configuration. Authentication can be done in multiple ways, including PPoE, MAC, ONU Serial number. And more often than not, the ONT is doing multiple connections for internet, management, telephone and TV.
Even if you get a list of all this information you still need cooperation from the ISP to get it working.
The ISP won't do that extra effort as it's only going to give them potential headaches
At your end there is no benefits in using (any) ONU not provisioned by your ISP.