What command turns off automatic summarization to major network boundaries in both RIPv2 and EIGRP?

To disable automatic summarization in RIPv2, you can use the command no auto-summary in the router configuration mode. For EIGRP, the command is no auto-summary as well, which can be entered in the EIGRP configuration mode. This prevents the router from summarizing routes at network boundaries and ensures that specific subnets are advertised.