OSPF Cost

[Muqatil]

Surfing in the Wiki i always find interesting infos..

@Mikrotik Wiki

The cost of an interface on Cisco routers is inversely proportional to the bandwidth of that interface. Higher bandwidth indicates lower cost. If similar costs are necessary on RouterOS, then use following formula:
Cost = 100000000/bw in bps.

The question is: Once i have set all those costs, does Mikrotik OSPF balance traffic once the bandwitdh is full?
I mean: If i set a cost in a link to match max bandwidth 2mbit, once the link reaches 2mbit, the exceeding traffic goes for another way (if exists) or it keeps going because it’s the shortest and the lowest path?

[mrz]

No OSPF is not capable of switching another path if all bandwidth is allocated on current one.

[awsmith]

@Medianet

Surfing in the Wiki i always find interesting infos..

@Mikrotik Wiki

The cost of an interface on Cisco routers is inversely proportional to the bandwidth of that interface. Higher bandwidth indicates lower cost. If similar costs are necessary on RouterOS, then use following formula:
Cost = 100000000/bw in bps.

The question is: Once i have set all those costs, does Mikrotik OSPF balance traffic once the bandwitdh is full?
I mean: If i set a cost in a link to match max bandwidth 2mbit, once the link reaches 2mbit, the exceeding traffic goes for another way (if exists) or it keeps going because it’s the shortest and the lowest path?

The cost is merely used in figuring out the “cheapest” way from point A to B. It is not in any way reactive to utilization. The only way to have it use alternate paths is to have equal costs across multiple paths (in which case it will load-balance over the equal-cost paths), or have the lowest cost path fail.