What Are The Different Port States?

1.	What Are The Different Port States?
Answer» Disabled - A port in the disabled state does not participate in the STP. Blocking - A blocked port does not forward FRAMES. It only listens to BPDUs. The purpose of the blocking state is to prevent the use of LOOPED paths. Listening - A port in listening state prepares to forward data frames without populating the MAC address table. The port also sends and listens to BPDUs to make SURE no LOOPS occur on the network. Learning - A port in learning state populates the MAC address table but doesn’t forward data frames. The port still sends and receives BPDUs as before. Forwarding - The port now can send and receive data frames, collect MAC addresses in its address table, send and receive BPDUs. The port is now a fully functioning switch port within the spanning-tree topology.

Answer»

Disabled - A port in the disabled state does not participate in the STP.
Blocking - A blocked port does not forward FRAMES. It only listens to BPDUs. The purpose of the blocking state is to prevent the use of LOOPED paths.
Listening - A port in listening state prepares to forward data frames without populating the MAC address table. The port also sends and listens to BPDUs to make SURE no LOOPS occur on the network.
Learning - A port in learning state populates the MAC address table but doesn’t forward data frames. The port still sends and receives BPDUs as before.
Forwarding - The port now can send and receive data frames, collect MAC addresses in its address table, send and receive BPDUs. The port is now a fully functioning switch port within the spanning-tree topology.

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