Cisco switch stp--solves broadcast storms

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In fact, the equipment on the network to prevent a single line failure caused local paralysis, the normal structure is set back to the road network, which is physically provided for the broadcast storm conditions------------------Solution STP protocol Logically forms a tree structure (Cisco switch comes with this protocol)

Stp:spanning Tree Protocal

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Description: The root bridge has only one, and the root port is one for each of the Root bridge's bridges, and the specified port is one per network segment.

The data of the STP protocol passes through BPDUs (the Bridge Protocol Unit, which is the default every 2 seconds), and the data includes the root bridge ID, the root path cost, the bridge ID of the BPDU that initiated the BPDUs, and the port ID of the sending message.

When the switch first starts, it defaults to the root bridge and receives the BPDUs from the other SW and compares it to the root bridge ID.

The following is the 5 STP status in the switch port

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Note: When the switch is started, the port status is listening, and the process of port color changing from yellow to green at startup is the STP operation

Enter Portfast in port to cancel port STP operations, such as the port of the PC connection switch

Cisco switch stp--solves broadcast storms