I know that OSPF will load balance across equal cost paths such as:
R1 ------------------ R3
| 100mbit |
| |
| 1gbit|
|100mbit |
| |
| 1gbit |
R2------------------- R4
A stream going between R1 and R4 will be broken up such that packet 1 goes to R2, packet 2 R3, packet 3 R2, etc.
Now lets say the link from R1 to R3 was upgraded to 1gbit. I know that I could manipulate the link costs to achieve equal cost load balancing across both links. However these links (R1->R3 : R1->R2) are in a 10:1 ratio of each other to fully utilize each link. Is it possible to load balance in a 10:1 ratio?
I'm not sure if this is native to OSPF. If not is there another Cisco (or otherwise) mechanism to achieve this.