When STP (Spanning Tree Protocol) places a port in the blocked state, it effectively disables the port to prevent network loops. This means the port will not forward any traffic, ensuring that data packets do not circulate endlessly in the network. The blocked port listens for STP bridge protocol data units (BPDUs) to detect changes in the network topology and can transition to a forwarding state if necessary. This mechanism helps maintain a loop-free network environment.
The five STP port states are disabled, blocking, listening, learning, and forwarding. These states help control network traffic and prevent loops in a spanning tree network topology.
designated port
Configuring Standard STP Parameters STP is disabled by default on Routing Switches. By default, each port-based VLAN on an HP device runs a separate spanning tree (a separate instance of STP). An HP device has one port-based VLAN (VLAN 1) by default that contains all the device's ports.
Gas at STP.
At STP neon is a gas.
gas at STP
Helium exists as a gas at STP
Helium is a gas at STP.
Gas
If you have frozen something it is a solid, regardless of its state at STP.
Beryllium is a solid metal at room temperature.
At room temperature and pressure radium is a solid metal.