root ports VS designated ports

rakemrakem Member Posts: 800
Im having some trouble differentiating between root ports and designated ports. I know that a root port is the port that connects directly to the root bridge, which means that it has the lowest cost back to the root bridge.

but what does a designated port do? i know they forward data, are they something like the best port to reacha root port through or something??

CCIE# 38186


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    cisco_troublecisco_trouble Inactive Imported Users Posts: 78 ■■□□□□□□□□
    A root port is a port that has the least cost to the root bridge and its desginated i.e. its in forwarding state.

    A designated port, a port placed into forwarding state. Designated ports are assigned once STP calculated the BID, comparing the mac and priorities.

    hope it helps
    "To strive, to seek, to find, and not to yield."
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