OSPF
OSPF Cost
cost = reference bandwidth / configured bandwidth of interface in kbps
reference bandwidth = 100,000 kbps
| Interface speed | OSPF Cost |
| 100 Mbps | 1 |
| 10 Mbps | 10 |
| 6 Mbps | 17 |
| 5 Mbps | 20 |
| 4 Mbps | 25 |
| 3 Mbps | 33 |
| 2 Mbps | 50 |
| 1.5 Mbps | 67 |
| 1 Mbps | 100 |
| 768 Kbps | 130 |
| 512 Kbps | 195 |
| 384 Kbps | 260 |
| 256 Kbps | 391 |
| 128 Kbps | 781 |
| 64 Kbps | 1563 |