Tunnel management method, tunnel management apparatus, and communications system

A tunnel management apparatus, comprising:

• a transmitter configured to send a message of a tunnel management request to a tunnel management node;
• a receiver configured to receive a response message responsive to the message of the tunnel management request from the tunnel management node, wherein when a failure of the tunnel management request occurs, the response message comprises an indication indicating which node that causes the failure;
• and
• a processor configured to determine a node that causes the failure according to the indication.

An initiating node apparatus capable of communication with a tunnel management node, comprising:

• one or more processors to:
• send a message of a tunnel management request to the tunnel management node;
• receive, from the tunnel management node, a response message responsive to the message of the tunnel management request, the response message including node information;
• and
• determine a node that causes a failure according to the node information included in the response message from the tunnel management node.