Run the display ike sa command to check the IKE SA information.

Note: RD: indicates that this SA has been successfully established; ST: indicates that this end is the channel negotiation initiator; RL: indicates that this channel has been replaced by a new channel, and will be deleted after a period of time; FD: indicates that this channel has been established. A soft timeout has occurred and is still in use. It will be deleted during a hard timeout. TO: indicates that the SA has not received a keepalive message after the last keepalive timeout. If the next keepalive timeout occurs, it will not be received. To the keepalive message, this SA will be deleted.