What does Spanning Tree do Cisco?

What does Spanning Tree do Cisco?

Spanning-Tree Protocol implements the 802.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops, and then removes the loop by shutting down selected bridge interfaces. This algorithm guarantees that there is one and only one active path between two network devices.

What is the main purpose of MST?

Multiple Spanning Tree (MST) was created to allow for multiple spanning tree topologies while preserving scalability. MST enables an administrator to map an arbitrary number of VLANs to a single MST instance, resulting in the minimum number of instances needed to satisfy a design.

What is STP convergence?

Spanning Tree Protocol (STP) convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state. When layer 2 is converged, Root Switch is elected and Root Ports, Designated Ports and Non-Designated ports in all switches are selected.

What is STP and how it works?

STP uses the Spanning-Tree Algorithm (SPA) to create a topology database of the network. To prevent loops, SPA places some interfaces in forwarding state and other interfaces in blocking state. all switches in a network elect a root switch. All working interfaces on the root switch are placed in forwarding state.

What are the two key benefits of VLAN’s?

VLANs provide a number of advantages, such as ease of administration, confinement of broadcast domains, reduced broadcast traffic, and enforcement of security policies.

What are two advantages of EtherChannel?

What are two advantages of EtherChannel? (Choose two.)

• Configuring the EtherChannel interface provides consistency in the configuration of the physical links.
• Load balancing occurs between links configured as different EtherChannels.
• EtherChannel uses upgraded physical links to provide increased bandwidth.

Does MST use RSTP?

RSTP and MSTP Configuration Guidelines When you enable MST by using the spanning-tree mode mst global configuration command, RSTP is enabled. PVST, PVST+ and MSTP are supported, but only one version can be active at any time; all VLANs run PVST, or all VLANs run MSTP.

Which is a type of STP state?

STP Port States There are five STP switchport states; these are: Disabled – The result of an administrative command that will disable the port. Blocking – When a device is connected, the port will first enter the blocking state. Listening -The switch will listen for and send BPDUs.

What is STP protocol used for?

Spanning Tree Protocol (STP) is a Layer 2 protocol that runs on bridges and switches. The specification for STP is IEEE 802.1D. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network.