An article about Loop Guard and I want to clarify my understanding
Loop guards : The switch figures out which ports are nondesignated and monitors the BPDU activity to keep them nodesignated. Nodesignated ports are generally the root port, alternate root ports and ports that normally are blocking.
BDPU is forward by Designated Port and received by Root Port on another switch. Why does it say root port is blocking ?
Do I misunderstand something ? Tks