Refer to the exhibit. An engineer is configuring IS-IS on ISP network. Which IS-IS configuration must an engineer implement on router AGG1 so that it establishes connectivity to router AGG6 via the BB

Without the full configuration details provided in choice A, it is impossible to determine the specific technical error, but it is assumed to be incomplete or incorrect for establishing the desired connectivity.

Without the full configuration details provided in choice B, it is impossible to determine the specific technical error, but it is assumed to be incomplete or incorrect for establishing the desired connectivity.

A complete IS-IS configuration for establishing connectivity between routers typically involves enabling IS-IS globally with a process ID (e.g., `router isis 100`), defining a Network Entity Title (NET), setting the IS-type (e.g., `is-type level-2`), and enabling IS-IS on all relevant interfaces that connect the routers in the same routing domain.

Without the full configuration details provided in choice D, it is impossible to determine the specific technical error, but it is assumed to be incomplete or incorrect for establishing the desired connectivity.