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Forum Replies

  1. Thanks Rene, The point here is usually you don’t know the end host capability, I saw cases loop can happen from a server with NIC bridging without STP capability.

    Just wanted to make sure Portfast + BPDUGuard can address this case

     

     

  2. Hi Ahmed,

    In that case it might be wise to enable BPDUguard. If someone connects something that isn’t supposed to send BPDUs then it’s best to shut the interface with BPDUguard :slight_smile:

    Rene

  3. Abhishek,
    I would phrase is slightly differently:

    BPDUGuard is used on ports where BPDUs are not expected to be received, but if BPDUs are received, the port will be placed into an error state.

    BPDUGuard does not prevent devices from sending BPDUs (BPDU Filtering does this). BPDUGuard simply listens for BPDUs and takes an action if it hears them.

  4. Hello rosna

    By default, all ports on a switch, including those configured with portfast SENDBPDUs. (It is possible to disable BPDU sending on these ports using BPDU filtering.) Portfast essentially skips the listening and learning states to enter the forwarding state immediately but does not disable STP. It also applies the global BPDUGuard feature (if it is enabled) to all ports configured using portfast.

    In addition, as you mentioned, it won’t send any TC information on that port because by definition, there should be no switches connected to the specific

    ... Continue reading in our forum

  5. Good explanation !!
    I really enjoy reading your topics and make me feel more comfortable and confident.

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