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Does Global DHCP Snooping Disable Over-ride Local VLAN DHCP Snooping?

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TitleDoes Global DHCP Snooping Disable Over-ride Local VLAN DHCP Snooping?
Question
Does Global DHCP Snooping Disable over-ride local VLAN DHCP snooping?
Environment
SecureStack
Answer
  • Yes.
  • From CLI Guide for the command "set dhcpsnooping {enable | disable}" on page 22-2:
"By default, DHCP snooping is disabled globally and on all VLANs. You must enable it globally with this command, and then enable it on specific VLANs."
  • So if DHCP Snooping is disabled globally enabling it on any VLAN will do nothing until it has been enabled globally also.  
  • Similarly enabling DHCP Snooping globally will do nothing until it is also enabled on the desired VLANs.
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