Reference Guide

Per-VLAN Spanning Tree Plus (PVST+) | 1193

Per-VLAN Spanning Tree Plus (PVST+)

Overview

The FTOS implementation of PVST+ (Per-VLAN Spanning Tree plus) is based on

the IEEE 802.1d standard Spanning Tree Protocol, but it creates a separate spanning

tree for each VLAN configured.

PVST+ (Per-VLAN Spanning Tree plus) is supported by FTOS on all Dell Force10

systems, as indicated by the characters that appear below each command heading:

e E-Series, c C-Series, s S-Series, , or .

Commands

The FTOS PVST+ commands are:

• disable

• description

• extend system-id

• protocol spanning-tree pvst

• show spanning-tree pvst

• spanning-tree pvst

• spanning-tree pvst err-disable

• tc-flush-standard

• vlan bridge-priority

• vlan forward-delay

• vlan hello-time

• vlan max-age

Note: For easier command line entry, the plus (+) sign is not used at the command

line.