STP的五种状态

2018年8月4日16:31:22 发表评论 1,987 views

STP的五种状态

 

1. Blocking State

·         Discards frames received on the port(不收数据帧)

·         Discards frames switched from another interface for forwarding(不转发从其它端口接收的数据帧)

·         Does not learn addresses(不学习MAC地址)

·         Receives BPDUs(接收BPDU

2. Listening State

·         Discards frames received on the port(不收数据帧)

·         Discards frames switched from another interface for forwarding(不转发从其它端口接收的数据帧)

·         Does not learn addresses(不学习MAC地址)

·         Receives BPDUs(接收BPDU

3. Learning State

·         Discards frames received on the port(不收数据帧)

·         Discards frames switched from another interface for forwarding(不转发从其它端口接收的数据帧)

·         Learns addresses(学习MAC地址)

·         Receives BPDUs (接收BPDU

4. Forwarding State

·         Receives and forwards frames received on the port(接收并且转发数据帧)

·         Forwards frames switched from another port(转发从其它端口接收的数据帧)

·         Learns addresses(学习MAC地址)

·         Receives BPDUs(接收BPDU

5. Disabled State

·         Discards frames received on the port(不收数据帧)

·         Discards frames switched from another interface for forwarding(不转发从其它端口接收的数据帧)

·         Does not learn addresses(不学习MAC地址)

·         Does not receive BPDUs(不接收BPDU

这个列表很清晰地列出各种状态下端口对BPDU和数据帧和MAC地址的处理情况。

 

 

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