switch S3, Fa0/5
switch S4, Fa0/2
alternate port
In an RSTP-enabled network, the possible port roles for ports A, B, C, and D are Root Port, Designated Port, and Blocked Port. The Root Port is the port that provides the shortest path to the root bridge, while the Designated Port is the port on a network segment that has the lowest cost to the root bridge and is in the forwarding state. Any port that does not fulfill these roles may be placed in a Blocked state to prevent loops. The specific roles would depend on the network topology and the bridge IDs.
PortFast
Link-type shared
IEEE 802.1w RSTP (Rapid Spanning Tree Protocol) typical convergence speed is less than 10 seconds.
1.16What is a characteristic of an RSTP edge port?
RSTP
To reduce the Spanning Tree Protocol (STP) convergence time in a network, enabling Rapid Spanning Tree Protocol (RSTP), which is defined in IEEE 802.1w, is recommended. RSTP significantly improves convergence times to a few seconds by introducing new port states and roles that expedite the transition of ports to forwarding mode. Additionally, implementing features like Bridge Protocol Data Units (BPDU) guard and root guard can enhance stability and speed up the convergence process further.
To create a ring topology using Cisco switches, you can utilize the Spanning Tree Protocol (STP) to prevent loops while connecting switches in a ring configuration. Connect each switch to two other switches, forming a circular pattern. Ensure that STP is enabled on the switches to manage traffic and prevent broadcast storms. Additionally, consider using features like Rapid STP (RSTP) for faster convergence times in the ring setup.
STP (Spanning Tree Protocol) is still referred to as STP. However, there are newer variations of STP such as Rapid Spanning Tree Protocol (RSTP) and Multiple Spanning Tree Protocol (MSTP).
In the Rapid Spanning Tree Protocol (RSTP), the forwarding port assigned for every switched Ethernet LAN segment is designated as the "Root Port" if it is the best path to the root bridge. For non-root bridges, the port that connects to the root bridge is elected as the Root Port, while other ports may be put into a Blocking state to prevent loops. The designated port, on the other hand, is the port on a network segment that has the lowest path cost to the root bridge and is responsible for forwarding traffic towards that segment.