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DHCP snooping database is shared with IP source guard and dynamic ARP inspection






Understanding DHCP Snooping (ELS)Link
DHCP SnoopingLink
Understanding IP Source Guard for Port Security on SwitchesLink
Understanding and Using Dynamic ARP Inspection (DAI)Link

Enhanced Layer 2 Software (ELS) configuration style
enable DAI on a VLAN  ( in ELS ) set vlans vlan-name forwarding-options dhcp-security arp-inspection

enable DAI on a VLAN  ( in non-ELS )

 for EX Series switches that do not support
the Enhanced Layer 2 Software (ELS)

set ethernet-switching-options secure-access-port vlan vlan-name arp-inspection

or

set ethernet-switching-options secure-access-port vlan all arp-inspection

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