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Comment on Basic networking/subnetting question.

marauding_gibberish142@lemmy.dbzer0.com ⁨1⁩ ⁨week⁩ ago

Thanks, but isn’t ARP contained inside a subnet? I guess you could find everything if you inspected the MAC table of the main switch

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possiblylinux127@lemmy.zip ⁨1⁩ ⁨week⁩ ago
ARP is in the broadcast domain (otherwise known as a lan)

Vlans create multiple lans

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- marauding_gibberish142@lemmy.dbzer0.com ⁨1⁩ ⁨week⁩ ago
  Ah, I see. Thanks
  
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nottelling@lemmy.world ⁨1⁩ ⁨week⁩ ago
no. Arp bridges layer 1 and 2. It’s switch local. With a VLAN, it becomes VLAN local, in the sense that 802.1q creates a “virtual” switch.

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- marauding_gibberish142@lemmy.dbzer0.com ⁨1⁩ ⁨week⁩ ago
  Sorry, I’m not sure what you mean by “ARP bridges L1 and L2”. I’ll have to read more about this. Other than that, I understand what you said.
  
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- possiblylinux127@lemmy.zip ⁨1⁩ ⁨week⁩ ago
  ARP is in a single broadcast domain which can span multiple switches.
  
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