The LDP Discovery message is used for neighbor discovery, and LDP has different discovery mechanisms when discovering neighbors. The following statements are about the Discovery message in the basic discovery mechanism, which is correct? (Multiple Choice)

The LDP Discovery message is used for neighbor discovery, and LDP has different discovery mechanisms when discovering neighbors. The following statements are about the Discovery message in the basic discovery mechanism, which is correct? (Multiple Choice)
A . This message is encapsulated in a UDP packet. The destination port number is 646.
B . The message is sent to the specified LDP Peer
C . The destination IP address of the message is the multicast IP address 224.0.0.2
D . After the TCP connection is established, the LSR no longer sends Hello Message.

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Answer: AB