A little confused here. Im trying to determine the root port for SWITCH B. SWITCH C here is the ROOT SWITCH. I understand that to determine the root port you need to find the lowest cost path to the root switch. So at the path highlighted in green, is the root path cost:
- 38 (because FA0/2 from SWITCH A + FA0/1 from SWITCH C)
- 23 (FA0/1 from SWITCH A + Gi 0/2 from SWITCH B)
I cannot which part should I look at to determine the cost (especially the connection between SW A and SW B). They are connected but on different speed port, one using Fast Ethernet, the other one Gigabit Ethernet?