Root Bridge/Cost

[rileykingsmill22]

Someone explain to me the relation between Root Bridge and Cost

[Reza Sharifi]

The lower the cost to Root Bridge, the better the route. So, if you have a gig and a 100Mb connection to the root bridge, the cost for the gig is lower. So, that is a better route. See link for more info:

https://networklessons.com/spanning-tree/spanning-tree-cost-calculation

HTH