Main equipment:

Helm: Arreat's Face
Armor: Fortitude Dusk Shroud
Weapon 1: Breath of the Dying Berserker Axe - (Ethereal)
Weapon 2: Beast Berserker Axe
Amulet: Highlord's Wrath
Ring 1: Raven Frost +20 dex
Ring 2: Raven Frost +20 dex
Belt: Verdungo's Hearty Cord 15% DR
Gloves: Dracul's Grasp +15 Str
Boots: Gore Rider

Switch:

Weapon 1: Call to Arms - 1-2 BO

Weapon 2: Call to Arms - 1-2 BO

Some gameplay tips:

Question: Why not spend skill points on Increased Speed to increase the speed of movement?

Answer: This is a very important point. The Whirlwind attack is very special. You can't stand in the same place. You have to move along a route and cause damage to surrounding monsters. The faster you move, the less time you can inflict damage on a monster. You need to move back and forth more often to kill monsters and that consumes more mana. Therefore, the Whrilwind barbarian should not deliberately pursue to increase in the speed of movement, s. Therefore, increased stamina is not required either since its only purpose it to be able to use the Increased Speed skill. Barbarians are never short of stamina.

[D2R Ladder] Annihilus (10-16 Attributes, 10-16 Resistance, 5-9% Experience)
$0.35

[D2R Ladder] Barbarian Hellfire Torch (10-16 Stats, 10-16 Res)
$0.35

[D2R Ladder] Token of Absolution for Respec
$0.35

[D2R Ladder] 100 Poison Damage Toxic Small Charm (plain)
$0.19

[D2R Ladder] Act2 Mercenary Set - Type 1 - Reapers Toll set
$2.45

[D2R Ladder] #22 Um Rune
$0.09

[D2R Ladder] Paladin Hellfire Torch (10-16 Stats, 10-16 Res)
$0.85

[D2R Ladder] Enigma Mage Plate
$1.85

[D2R Ladder] Amazon Hellfire Torch (10-16 Stats, 10-16 Res)
$0.35

[D2R Ladder] Cold Sorceress Full Gear (Normal)
$9.85

[D2R Ladder] Smiter Full Gear (Normal)
$9.95

[D2R Ladder] Hammerdian Full Gear (Normal)
$9.95