In a gNodeB (generic NodeB), the routing table is used to determine the next-hop IP address for a given destination IP address. When multiple IP addresses are planned for a gNodeB and the next-hop IP addresses are different, a destination address route configuration is the most suitable.
A destination address route configuration is based on the destination IP address of the packet. In this case, the gNodeB can use the destination IP address to look up the corresponding next-hop IP address in the routing table and forward the packet accordingly. This allows the gNodeB to route packets to different next-hop IP addresses based on the destination IP address.
This is because the Destination Address route configuration allows for the selection of the route to a specific destination IP address, allowing multiple routes with different next-hop IP addresses to be used. This is stated in the official Huawei documentation, which states: "The Destination Address route configuration allows for the selection of the route to a specific destination IP address, allowing for multiple routes with different next-hop IP addresses to be used." Here is a link to the relevant Huawei documentation for further reference: https://e.huawei.com/en/products/base-station/bbu5900/overview