When RIP is configured on a router, what must be configured to allow for classless routing?

When you're configuring RIP on a router, the RIP process will default to RIPv1, which is classful. The command version 2 must be configured in the router instance of RIP to allow for RIPv2. The command ip classless is incorrect, when configured in the global configuration prompt or the config-router prompt. The command router rip v2 is also incorrect.