Compared with STP, which of the following port roles does RSTP add?
Compared with STP, which of the following port roles does RSTP add?
Compared with Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP) introduces two additional port roles: Alternate Port and Backup Port. An Alternate Port provides an alternative path to the root switch, different from the path that the root port takes. It is in a blocking state but can transition to forwarding quickly if the network topology changes and the primary path fails. A Backup Port provides a redundant path to a segment where another switch port already connects. Both roles are aimed at enhancing the redundancy and speed of convergence in the network. Despite the suggestion, the correct answer in the context of adding a new port role, as compared to STP, is the Alternate Port, making it the right choice in this instance.
Alternate port already exists in STP. The new port roles are Backup port and Edge Port.
A correta é (C)
C and D Compared to Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP) introduces two additional port roles: Alternate Port: This port receives BPDUs (Bridge Protocol Data Units) from its own switch but remains in a blocked state unless the designated port fails. In STP, there's no equivalent role, and only blocked ports receive BPDUs from other switches. Backup Port: This port receives BPDUs from other switches but remains in a blocked state unless both the root port and designated port fail. This also doesn't have a direct equivalent in STP, offering an extra layer of redundancy.
Respuesta C y D Alternate Port: This is a new role introduced in RSTP. An alternate port is one that provides an alternative path to the root switch, different from the path that the root port takes. It's in a blocking state but can transition to forwarding quickly if the network topology changes and the primary path (via the root port) fails. Backup Port: This is another new role introduced in RSTP. A backup port provides a redundant (backup) path to a segment where another switch port already connects. This port is also in a blocking state, and will only become active if the designated port for that segment
DDDDDD