In the MPLS network, LSRs running the LDP protocol exchange LDP messages to implement functions such as neighbor discovery, session establishment and maintenance, and label management. In order to…

In the MPLS network, LSRs running the LDP protocol exchange LDP messages to implement functions such as neighbor discovery, session establishment and maintenance, and label management. In order to ensure the reliability of message delivery, all LDP messages must be sent and received based on TCP connections.