Currently, HG824x series Huawei GPON ONT supports the following types of routes:

Policy route: The egress of packets is determined based on the ingress, source IP address, and IPTOS of the packets. Currently, the ONT supports the ingress- and source IP address-based policy routes. These routes can be configured by using the NMS or web page.
The ingress-based policy route can be used for the Internet access service. The route can be configured by binding the WAN port to the LAN port of the ONT. After the Layer 3 LAN port is bound to a WAN port, all packets that are routed into the ONT through this LAN port are routed out of the ONT through the WAN port that is bound to the LAN port.
The source IP address-based policy route is used for the voice service and TR-069 service by default. After the voice WAN port and TR-069 WAN port obtain the IP address, the source IP address-based policy route is automatically configured on the ONT. If the source IP address in a packet is the IP address of the voice WAN port, the packet is forwarded to this WAN port. If the source IP address in a packet is the IP address of the TR-069 WAN port, the packet is forwarded to this WAN port.

Static route: The network administrator manually configures the routing information by using the NMS or web page. The WAN port of the ONT on the route is specified based on the source IP address of packets.

Default route: After the ONT fails to find a policy route or static route after receiving packets, the ONT forwards the packets through the WAN port specified by the default route. The default route can be configured by using the NMS or web page.

After buy Huawei HG8245Q2 HG824x series ONT, it always selects a route with a higher preference. Among the three types of routes, the preference of the policy route is the highest and the preference of the default route is the lowest.