What are the key differences between DHCP Server Guard and DHCP Snooping?

Zyxel_Adam Posts: 340  Zyxel Employee
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DHCP Server Guard and DHCP Snooping are two distinct features with different operational mechanisms and purposes:

  • DHCP Server Guard: This feature uses hardware ACL to control the passage of DHCP packets based on the trust status (trusted/untrusted) of a port. It does not record IP/MAC information to a table.
  • DHCP Snooping: In contrast, DHCP Snooping monitors and controls DHCP packets, allowing them only through trusted ports. This process is managed by software and records information to the IPSG (IP Source Guard) table.