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    Do Wan Links have a broadcast address?

    Discussion in 'Networking and Wireless' started by ChaosX5, Feb 22, 2010.

  1. ChaosX5

    ChaosX5 Notebook Evangelist

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    ^. It may seem like a very stupid question but I am new to networking and stuff.
     
    ChaosX5, Feb 22, 2010
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  2. Aerick

    Aerick Notebook Guru

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    At layer 3 (OSI), if IPv4, then yes, every subnet has a broadcast address. IPv6 removes the concept of broadcast, replacing it with multicast and anycast.

    Layer 2 is pretty diverse, so I'm not really sure. Ethernet based WAN links most certainly have the notion of a L2 broadcast, but protocols such as PPP, ATM, MPLS, or Frame Relay do not, unless encapsulated within Ethernet (i.e. PPPoE).
     
    Aerick, Feb 22, 2010
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  3. ChaosX5

    ChaosX5 Notebook Evangelist

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    Thanks. And yes it was IPv4.
     
    ChaosX5, Feb 22, 2010
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