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| 摘要: |
| 标签分配协议是MPLS技术的控制协议，也是MPLS的核心，它相当于传统信令中的信令协议，负责转发等价类的分类、标签的分配、分配结果的传输及LSP的建立和维护等一系列操作。分6个部分描述与LDP有关的内容，其中包括：与标签、标签分配协议等相关的概念；LDP规范中规定的LDP PDU、消息、TLV等的结构；LDP的功能和工作的4个阶段；标签的分配和管理技术；LDP与BGP和LIB的关系；对LDP的扩展-CR-LDP等内容。 |
| 关键词: 多协议标签交换 标签 消息 服务质量 通信协议 |
| DOI： |
| 分类号:TN915.04 |
| 基金项目: |
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| The core of MPLS-LDP |
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CHEN Qi mei 1 2 ZHOU Xiu yi 1 WANG Yi 1
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| Abstract: |
| LDP is the control protocol of MPLS,and also the its core.It equals to the traditional signal and order protocol,which is used to classify the FEC,distribute labels,transmit the distributing results and establish and maintain the LSP.There are six parts introducing the contents about LDP.They are:the relevant concepts about label and LDP;the data structures of PDU,message and TLV LDP PDU stipulated in LDP specification;the four working phases of LDP; the distribution and management technologies of label;the relationship among LDP,BGP and LIB; and the extension of LDP?CR?LDR. |
| Key words: MPLS,LDP,label,message,CR?LDP,QoS, |
