> On Apr 12, 2022, at 1:44 PM, Todd Goodman via cctalk <cctalk@classiccmp.org> 
> wrote:
> 
> On 4/12/2022 1:28 PM, Grant Taylor via cctalk wrote:
>> On 4/12/22 7:56 AM, Todd Goodman via cctalk wrote:
>>> The big difference in my mind between bridge and switch is:
>>> 
>>>   * Switches learn what port given MACs are on and only sends unicast
>>>     traffic destined for that MAC address on that port and not all
>>>   * Bridges send unicast traffic to all ports
>> 
>> So what would differentiate the bridge (using your understanding) from a hub?
> To me a hub is a layer 1 device (physical layer) that doesn't look at the 
> traffic at all while the bridge does look at the traffic and generally 
> implements 802.1d Spanning Tree Protocol and processes BPDUs.

For 802.3, a physical layer relay is called a repeater.  Other LAN types, if 
they have such things, may use other names; for example FDDI calls it a 
concentrator.  

        paul

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