Hi friend.
You can try either of the following methods:
1. Verify the gateway ARP table of the ONT and which MAC address is the associated MAC address. If the OLT functions as the gateway, you can run the display arp all command to collect mac address information of the ONT.
The display arp command is used to query the Address Resolution Protocol (ARP) mapping. When you need to diagnose and troubleshoot ARP faults, and query the mapping between the IP address and the MAC address, run this command.
For more details, click: display arp
2. You can log in to the ONT by running the telnet command on the OLT. After logging in to the ONT through the CLI, you can run the display productmac command in the WAP view to collect the MAC address of the ONT.
For more information about the telnet command, click: telnet(ont)
I hope I can help you!