Sunday, November 3, 2013

root port vs designated port

It's probably easy to configure a switch to be a root switch. However, I've just realized that I missed something that I didn't understand the concept of what the root switch is.

There are two type of port, i.e.:

  1. root port
  2. designated port
Root port is a port telling us the path toward the root switch. While designated port is a port in direction of leaving away from the root switch.

By that definition, a root port will always a pair with designated port on its direct neighbor switch. And when a switch doesn't have any root port, it is definitely the root switch itself.


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