Which command is used to verify the status of IKE peering security associations?

The command used to verify the status of IKE (Internet Key Exchange) peering security associations is "show crypto isakmp sa." This command is crucial because it provides an overview of the IKE security associations that have been established for a VPN (Virtual Private Network) connection.

When you execute this command, it displays information such as the peer's IP address, the current state of the association (whether it is active or not), and other parameters like the lifetime of the security association. This is essential for troubleshooting and ensuring that IKE negotiations are proceeding as expected and that the endpoints can communicate securely.

Understanding the status of IKE peering is vital for network security, as it indicates whether the cryptographic parameters are correctly established and maintained. This command specifically targets the IKE layer of the VPN process, while the other choices refer to different aspects of security associations, such as IPsec or more general security associations, which don’t provide the specific IKE information needed for debugging or verification of IKE peering.