NA292 - Printable Version +- How2pass.com Forums (https://www.how2pass.com/forum) +-- Forum: CCNA (https://www.how2pass.com/forum/forum-4.html) +--- Forum: Answer this question (https://www.how2pass.com/forum/forum-11.html) +--- Thread: NA292 (/thread-143.html) |
NA292 - fucher - 06-03-2009 I have a question about links between network devices with two different physical speeds and what the STP cost is. In the example it shows a Gig link and an Fe link on the same network segment. Is the STP cost what ever the highest cost interface allows. So if you have a Gig and an Fe on the same link the cost will be 19? The answer hints at this but does not explicitly say so. Thanks in advance Re: NA292 - St. Louis - 07-23-2009 I believe this depends on what value you are trying to determine. If you are trying to determine the root port for a non-route bridge/switch, you add the costs associated with the outgoing interfaces on the way to the root bridge/switch. If you are trying to determine the cost of a hello packet onto a LAN, you start at the root bridge/switch and add the port costs of the incoming interfaces on the switches/bridges, until you reach the LAN segment in question. Correct me if I'm wrong or have misunderstood your question. |