The YANG value rcvr-state-invalid is used only by legacy receivers. Subscription receivers that are invalid cannot be connected, so the subscription receiver state is set to disconnected when it is invalid. The explanation string provides the distinction between invalid subscription receivers and disconnected subscription receivers. A subscription receiver may be disconnected due to the following reasons: • Another receiver on the subscription is not disconnected. • Connection setup failed permanently. • Named receiver does not exist. • Named receiver is not the type specified in the subscription. • Named receiver is not valid. • Subscription is invalid.
• The requested connection is in use by a different receiver. Subscription Receiver Connections This section provides information on how subscription receivers use connections. Telemetry Connections Telemetry connections represent the transport instances used by subscriptions to reach the receivers and are purely operational. Telemetry connections are identified by an integer index value. Other information about the connections is specific to the type of connection, which is based on the type of receiver that the subscription is configured to use.
For the secure dial-out transports, the host part of the configured named receiver must match the distinguished name (DN) of the certificate provided by the receiver, when the connection is set up. For this reason, it is not permitted to have more than one receiver using the same connection. Model-Driven Telemetry Subscription Receiver Connections Subscription Receiver State Description Resolving rcvr-state-resolving Resolving the connection parameters required to reach the receiver. Transport requested rcvr-state-transport-requested A request for a connection to reach the receiver was using the connection parameters determined from the resolving state.
Connecting rcvr-state-connecting Resources needed to connect the subscription to the receiver are being allocated. Connected rcvr-state-connected The subscription is connected to the receiver, and updates can flow to the receiver. Disconnecting rcvr-state-disconnecting Resources used on the connection are being re-allocated. Model-Driven Telemetry 25