Traditional network layer packet forwarding relies on the information provided by network layer （本题） protocols, or static routing, to make an independent （ ）decision at each hop within the network. The forwarding （ ）is based solely on the destination （ ）IP address. All packets for the same destination follow the same path across the network if no other equal-cost paths exist. Whenever a router has two equal-cost （ ）toward a destination, the packets toward the destination might take one or both of them, resulting in some degree of load sharing.