What configuration command sets the OSPF cost on an interface?

The command used to set the OSPF cost on an interface is "ip ospf cost [value]." This command is critical in OSPF (Open Shortest Path First) configurations as it directly influences the route selection process.

In OSPF, each interface has a cost associated with it, which is a value that indicates the overhead required to send packets. Lower costs are preferred when OSPF determines the best path for routing packets. By using the command "ip ospf cost [value]," network administrators can manually override the default cost, allowing for fine-tuning of the OSPF routing tables based on specific network design requirements or traffic patterns.

Adjusting the OSPF cost can be beneficial in multi-path routing scenarios or when wanting to modify the use of certain paths in a network without reconfiguring the entire OSPF topology. This command works specifically within the interface configuration mode, ensuring that it is applied to the right interface where the OSPF is enabled.

In contrast, the other options do not represent valid Cisco IOS commands for configuring OSPF cost on an interface, which is why they are not applicable in this context. The "ip ospf cost [value]" command is the standardized method recognized