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  1. #1
    adel87 is offline Member
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    Default difficult sentence

    dears sir in this sentence
    TCN BPDUs every Hello Time interval until it gets an acknowledgment
    from its upstream neighbor.
    i don't understand what is the meaning of upstream
    thank you

  2. #2
    Soup's Avatar
    Soup is offline VIP Member
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    Default Re: difficult sentence

    Upstream means towards (e.g., towards the root bridge); downstream means from.

    See page 11 here.

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