El costo de la ruta raiz siempre es 0 en el puente raiz
Formula
802.1D → 802.1W y 802.1S →
Tabla de costos
| Link Speed | 802.1D cost Short-Mode (Default) | RSTP/MSTP cost Long-Mode |
|---|---|---|
| 4Mbps | 250 | 5,000,000 |
| 10Mbps | 100 | 2,000,000 |
| 16Mbps | 62 | 1,250,000 |
| 100Mbps | 19 | 200,000 |
| 1Gbps | 4 | 20,000 |
| 2Gbps | 3 | 10,000 |
| 10Gbps | 2 | 2,000 |
| 20Gbps | 1 | 1,000 |
| 100Gbps | 1 | 200 |
| 1Tbps | 1 | 20 |
| 10Tbps | 1 | 2 |