Users' questions

What is Cisco Pvst?

by Rhyley Bryan

What is Cisco Pvst?

Per VLAN Spanning Tree (PVST) is a Cisco proprietary protocol that allows a Cisco device to have multiple spanning trees. PVST+ is an extension of PVST that allows a Cisco device to also interoperate with devices that are running a single spanning tree (IEEE 802.1Q).

What is the difference between STP and Pvst?

Spanning tree protocol is unique to computers. “RSTP” stands for “Rapid Spanning Tree Protocol” while “PVST” does the same for “Per-VLAN Spanning Tree.” RSTP is an improvement of STP (Spanning Tree Protocol) in terms of being newer and faster. The RSTP is able to respond to changes in six seconds.

How do I enable Pvst+?

We will do the below configuration steps for our PVST+ Configuration on Cisco Packet Tracer.

  1. Defining VLANs on the swithes (VLAN 1,2,3,4)
  2. Setting all switch interfaces as Trunk and se tthe allowed VLANs.
  3. Setting STP Mode as PVST+
  4. Setting VLANs in STP Topology (VLAN 1,2,3,4)
  5. Verification.
  6. PVST+ Manuplation Commands.

What is Pvst mode in the switch?

With mode ‘pvst’, the switch uses Per-VLAN Spanning-Tree (PVST). Each VLAN runs its own instance of STP using the original 802.1d rules (non-rapid). With mode ‘rapid-pvst’, the switch also uses Per-VLAN Spanning-Tree (PVST). Each VLAN runs its own instance of STP using the updated Rapid STP rules (802.1w).

What makes PVST + proprietary with Cisco PVST plus?

By nature of the Rapid-PVST protocol being based on RSTP, this also means that Arista switches are backward-compatible with Cisco switches utilizing their proprietary Per-VLAN Spanning Tree Plus (PVST+) protocol. What Makes PVST+ Proprietary

What to know about spanning tree in PVST +?

It also explains the PVST+ configuration, Spanning Tree load balancing, and the UplinkFast and BackboneFast features. It is recommended to read Understanding Rapid Spanning Tree Protocol (802.1w) before you configure rapid-PVST+.

What do you need to know about rapid PVST +?

Configuring Rapid PVST+. Rapid per VLAN Spanning Tree (Rapid PVST+) is an updated implementation of STP that allows you to create one spanning tree topology for each VLAN. Rapid PVST+ is the default Spanning Tree Protocol (STP) mode on the switch.

Is the Arista rapid PVST protocol compatible with Cisco?

By nature of the Rapid-PVST protocol being based on RSTP, this also means that Arista switches are backward-compatible with Cisco switches utilizing their proprietary Per-VLAN Spanning Tree Plus (PVST+) protocol.