Spanning Tree Scenario

alexotecalexotec Member Posts: 6 ■□□□□□□□□□
in CCNA & CCENT
Can somebody just clarify for me how switch B would reach the root bridge (switch A) in this scenario?



Would it be through it's directly connected interface or would it go from B - D - E - C - A?
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  • RoguetadhgRoguetadhg Member Posts: 2,489 ■■■■■■■■□□
    10 + 19 + 19 + 10 = 58 < 100 (direct connection)
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  • jude56gjude56g Member Posts: 107 ■■■□□□□□□□
    I'm studying STP at the moment too. Based on the costs in the diagram, the path would be B-D-E-C-A. Based on link costs, the direct link to switch A would be a 10M connection where the others would be 100M or faster.
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  • alexotecalexotec Member Posts: 6 ■□□□□□□□□□
    My thoughts exactly, although my lecturer at university who has a CCIE was saying otherwise, he was saying that a directly connected switch has a cost of 0. But i have read a few cisco books that say it does use the cost and just wanted more clarification

    Thanks
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  • SharkDiverSharkDiver Member Posts: 844
    A connected route has a AD of 0, when you deal with routing tables.
    Maybe he got confused.
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  • networker050184networker050184 Mod Posts: 11,962 Mod
    You don't need to get a 100% on the written or lab to get a CCIE! :)
    An expert is a man who has made all the mistakes which can be made.
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  • alexotecalexotec Member Posts: 6 ■□□□□□□□□□
    Thanks for clearing it up.
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