Which of the following is true regarding Label Distribution Protocol (LDP)?()
- A、It is a label distribution protocol for MPLS
- B、It is a set of procedures and messages by which LSRs establish Label Switch Paths (LSPs) through a network
- C、Tag distribution Protocol (TDP) was the basis for LDP
- D、All of the above are true
正确答案:D
答案解析:有

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